SUHU, PEMUAIAN, DAN KALOR 1. Identitas Nama Mata Pelajaran ...ukbm.mtsnlumajang.sch.id/wp-content/uploads/ukbm/ukbm/7/ipa/UKBM4.pdf · menganalisis konsep suhu, pemuaian, kalor, perpindahan

IPA – 3.4 / 4.4 / 1 / 1.1

UKBM MTsN 1 Lumajang 1

1. Identitas

a. Nama Mata Pelajaran : Ilmu Pengetahuan Alam b. Semester : 1 c. Kompetensi Dasar :

d. Materi Pokok : Suhu, Pemuaian, dan Kalor e. Alokasi Waktu : 5 JP X 4 f. Tujuan Pembelajaran :

g. Materi Pembelajaran Bacalah buku teks pelajaran (BTP): IPA FISIKA untuk SMP/ MTs Kelas VII . Jakarta:

Erlangga hal. 139 s.d. 172.

2. Peta Konsep

(sumber : http://smartlearning.fisika-unj.ac.id/11a/courses/suhu-dan-kalor/)

3.4 Menganalisis konsep suhu, pemuaian, kalor, perpindahan kalor, dan penerapannya

dalam kehidupan sehari-hari termasuk mekanisme menjaga kestabilan suhu tubuh

pada manusia dan hewan

4.4 Melakukan percobaan untuk menyelidiki pengaruh kalor terhadap suhu dan wujud

benda serta perpindahan kalor

Melalui kegiatan pembelajaran dengan metode diskusi, tanya jawab, analisis, penugasan, dan presentasi dengan pendekatan saintifik, peserta didik dapat menganalisis konsep suhu, pemuaian, kalor, perpindahan kalor, dan penerapannya dalam kehidupan sehari-hari termasuk mekanisme menjaga kestabilan suhu tubuh pada manusia dan hewan, terampil melakukan percobaan untuk menyelidiki pengaruh kalor terhadap suhu dan wujud benda serta perpindahan kalor sehingga peserta didik dapat menghayati dan mengamalkan ajaran agama yang dianutnya melalui belajar IPA, mengembangkan sikap/ karakter jujur, peduli, dan bertanggung jawab serta dapat mengembangkan kemampuan berpikir kritis, berkomunikasi, berkolaborasi, berkreasi (4C) dan berliterasi.

SUHU, PEMUAIAN, DAN KALOR

IPA – 3.4 / 4.4 / 1 / 1.1

UKBM MTsN 1 Lumajang 2

3. Proses Belajar

Sebelum mempelajari materi ini, silakan Anda perhatikan gambar berikut

Untuk dapat menyelesaikan persoalan tersebut, silakan Anda lanjutkan ke kegiatan berikut dan ikuti petunjuk yang ada dalam UKBM ini.

1. Petunjuk Umum UKBM

a. Baca dan pahami materi pada Buku Siswa IPA fisika untuk kelas VII yang diterbitkan oleh Erlangga, halaman 139 s.d. 172.

b. Setelah memahami isi materi dalam bacaan berlatihlah untuk berpikir tinggi melalui tugas-tugas yang terdapat pada UKBM ini baik bekerja sendiri maupun bersama teman sebangku atau teman lainnya.

c. Kerjakan UKBM ini di buku kerja atau langsung mengisikan pada bagian yang telah disediakan.

d. Anda dapat belajar bertahap dan berlanjut melalui kegiatan ayo berlatih, apabila Anda yakin sudah paham dan mampu menyelesaikan permasalahan-permasalahan dalam kegiatan belajar 1 dan 2. Anda boleh sendiri atau mengajak teman lain yang sudah siap untuk mengikuti tes formatif agar Anda dapat belajar ke UKBM berikutnya.

2. Kegiatan Belajar Ayo … … ikuti kegiatan belajar berikut dengan penuh kesabaran dan konsentrasi!!!

Kegiatan belajar 1 <<

Sebelum mempelajari materi ini, silakan Anda perhatikan gambar berikut

a. Pendahuluan

Gb 1. Pemandangan danau dan pegunungan

http://www.mikirbae.com/2016/12/cara-mengklasifikasikan-materi.html

Gambar di atas merupakan tiga benda yang pada dasarnya memiliki asal yang sama, akan tetapi bentuknya berbeda dan dengan sifat-sifat yang berbeda pula. Apa saja perbedaannya? Mengapa hal itu dapat terjadi?

b. Kegiatan Inti

Gb1. Mengukur suhu badan bayi

https://wikibunda.com/bayi/cara-

mengukur-suhu-tubuh-bayi-yang-

benar/

Gb2. Termometer Celcius dan Farenheit

https://se.depositphotos.com/1604538

42/stock-photo-wooden-thermometer-

scale.html

IPA – 3.4 / 4.4 / 1 / 1.1

UKBM MTsN 1 Lumajang 3

Untuk lebih memahami materi tersebut bacalah buku teks pelajaran (BTP): IPA FISIKA untuk SMP/ MTs Kelas VII . Jakarta: Erlangga hal. 139 s.d. 150. Kemudian kerjakan aktivitas di bawah ini! 1. Perhatikan gambar di bawah ini!

(https://khusnulazhari.wordpress.com/2012/11/27/termometer-air-raksa/)

Gambar di atas merupakan gambar termometer air raksa setelah digunakan. Bagaimanakah cara kerja dari termometer tersebut sehingga dapat digunakan untuk mengukur suhu? ......................................................................................................................................................................................................... ......................................................................................................................................................................................................... ......................................................................................................................................................................................................... ......................................................................................................................................................................................................... ......................................................................................................................................................................................................... ......................................................................................................................................................................................................... ......................................................................................................................................................................................................... ......................................................................................................................................................................................................... .........................................................................................................................................................................................................

2. Perhatikan gambar berikut!

(https://www.pinterpandai.com/rumus-termometer-celcius-fahrenheit-reaumur-kelvin/)

a. Bagaimana jumlah skala pada masing-masing termometer? .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... ..........................................................................................................................................................................

b. Tuliskan perbandingan skala dari semua skala suhu tersebut! .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... ..........................................................................................................................................................................

c. Berdasarkan perbandingan skala yang telah kamu buat, bagaimanakah cara mengkonversi satuan suhu? Tuliskan dalam tabel di bawah ini!

0C 0R 0F K

0C 0R 0F K

Kita sering menggunakan termometer untuk mengukur suhu badan maupun suhu ruangan, tapi tahukah kalian bagaimana cara kerja dari termometer itu? Ada berapa jenis satuan suhu?

IPA – 3.4 / 4.4 / 1 / 1.1

UKBM MTsN 1 Lumajang 4

3. Perhatikan gambar berikut

a. Menurut kamu apakah termometer yang digunakan untuk mengukur suhu air mendidih

dapat digunakan untuk mengukur suhu matahari? Berikan penjelasan! .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... ..........................................................................................................................................................................

b. Bagaimana cara mengukur suhu matahari? .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... ..........................................................................................................................................................................

c. Carilah macam-macam termometer yang kamu ketahui dan bagaimana cara menggunakan termometer tersebut! .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... ..........................................................................................................................................................................

Untuk meningkatkan pemahamanmu terkait dengan konsep suhu, kerjakan soal di bawah ini dengan sungguh-sungguh! 1. Seorang siswa merasa tidak enak badan dan meminta tolong teman sebangkunya

untuk mengukur suhu badannya yang sedang demam, ternyata didapatkan hasil 350C. Oleh karena itu ia disuruh untuk beristirahat di UKS. a. Menurut kamu jenis termometer apakah yang paling cocok digunakan mengukur

suhu badan siswa yang sakit tersebut? ............................................................................................................................................................. ............................................................................................................................................................. ............................................................................................................................................................. .............................................................................................................................................................

b. Jika dinyatakan dalam satuan Reamur, Kelvin, dan Farenheit berapakah suhu siswa tersebut? ............................................................................................................................................................. ............................................................................................................................................................. ............................................................................................................................................................. ............................................................................................................................................................. ............................................................................................................................................................. ............................................................................................................................................................. .............................................................................................................................................................

Gb1. Air Mendidih (http://caritacampurrattu.blogspot.com/2012/01/cara-memasak-air-

yang-baik-dan-benar.html)

Gb2. Matahari (https://www.hitekno.com/sains/2019/03/12/150000/proyek-matahari-

buatan-china-ditargetkan-selesai-2019)

Ayo berlatih!

IPA – 3.4 / 4.4 / 1 / 1.1

UKBM MTsN 1 Lumajang 5

2. Andi melakukan pengukuran terhadap suatu cairan dengan menggunakan termometer Celcius dan Farenheit tenyata didapatkan hasil pengukuran yang sama. Berapakah hasil pengukuran tersebut? (dalam skala Celcius) ................................................................................................................................................................... ................................................................................................................................................................... ................................................................................................................................................................... ................................................................................................................................................................... ................................................................................................................................................................... ...................................................................................................................................................................

3. Seorang peneliti ingin membuat sebuah termometer X. Ia kemudian melakukan pengukuran pada saat es mencair ternyata didapatkan suhu -200X dan melakukan pengukuran pada saat air mendidih ternyata didapatkan suhu 1000X. a. Tentukan jumlah skala pada termometer X

............................................................................................................................................................. ............................................................................................................................................................. .............................................................................................................................................................

b. Jika termometer tersebut menunjukkan angka 500X, berapakah suhu tersebut dalam satuan Celcius dan Reamur? ............................................................................................................................................................. ............................................................................................................................................................. ............................................................................................................................................................. ............................................................................................................................................................. ............................................................................................................................................................. .............................................................................................................................................................

Berdasarkan apa yang sudah kamu kerjakan, buatlah kesimpulan terkait dengan satuan suhu dan termometer! ............................................................................................................................................................................................. ............................................................................................................................................................................................. ............................................................................................................................................................................................. ............................................................................................................................................................................................. .............................................................................................................................................................................................

Kegiatan belajar 2 <<

Perhatikan gambar berikut!

Ayo simpulkan!

Gb1. Balon Udara http://anistazahara.blogspot.com

/2013/05/v-

behaviorurldefaultvmlo_27.html Gb2. Skema Alarm Kebakaran

https://seputarilmu.com/2018/12/bimetal.html

IPA – 3.4 / 4.4 / 1 / 1.1

UKBM MTsN 1 Lumajang 6

Agar lebih memahami materi terkait dengan proses pemuaian, bacalah buku teks pelajaran (BTP): IPA FISIKA untuk SMP/ MTs Kelas VII . Jakarta: Erlangga hal. 150 s.d. 164. Kemudian kalian mengerjakan aktivitas berikut 1. Perhatikan gambar berikut!

Gambar tersebut merupakan cara pemasangan kaca jendela pada kusennya. Jika diperhatikan lebih seksama ternyata cara memasangnya longgar tidak mepet. a. Mengapa pemasangan kacanya longgar? Bagaimana jika tidak diberikan kelonggaran?

............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................

b. Menurut pendapat kamu, bagaimana ukuran kaca tersebut pada siang hari? ............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................

c. Carilah di lingkungan sekitarmu terkait dengan fenomena yang mirip dengan fenomena di atas! ............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................

2. Perhatikan gambar berikut!

a. Gambarkan bentuk benda-benda di atas, jika semuanya dipanaskan secara bersamaan!

............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................

Kedua gambar menunjukkan adanya fenomena pemanfaatan pemuaian dalam kehidupan sehari-hari. Akan tetapi bagaimana bisa terjadi pemuaian ? adakah pemuaian yang merugikan bagi manusia?

Gb1. Pemasangan kaca jendela http://www.fenstal.co.id/double-

galzed-pada-kusen-aluminium/

IPA – 3.4 / 4.4 / 1 / 1.1

UKBM MTsN 1 Lumajang 7

b. Menurut pendapatmu, apakah semua benda mengalami jenis pemuaian yang sama? ............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................

c. Bagaimanakah cara untuk menentukan ukuran akhir benda-benda tersebut setelah dipanaskan? ............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................

3. Perhatikan gambar dua plat logam berikut ini!

a. Jika awalnya kedua plat logam memiliki ukuran yang sama, sedangkan plat logam A

memiliki koefisien muai panjang yang lebih besar daripada logam B, bagaiamanakah ukuran kedua logam setelah dipanaskan? ............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................

b. Jika awalnya kedua plat logam memiliki ukuran yang sama, sedangkan plat logam A memiliki koefisien muai panjang yang lebih besar daripada logam B, bagaiamanakah ukuran kedua logam setelah didinginkan? ............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................

c. Bagaimanakah pengaruh koefisien muai panjang suatu benda terhadap kemampuan benda untuk memuai? ............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................ ............................................................................................................................................................................

Agar lebih memahami terkait dengan konsep pemuaian, kerjakan soal latihan berikut ini! 1. Pada suhu 20oC, panjang kawat besi adalah 20 m. Berapakah panjang kawat besi tersebut

pada suhu 100oC jika koefisien muai panjang besi 1,1 × 10-5/oC? .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... ....................................................................................................................................................................................

2. Sebuah benda yang terbuat dari baja memiliki panjang 1000 cm. Berapakah pertambahan panjang baja itu, jika terjadi perubahan suhu sebesar 50°C? .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... ....................................................................................................................................................................................

Ayo berlatih!

IPA – 3.4 / 4.4 / 1 / 1.1

UKBM MTsN 1 Lumajang 8

.................................................................................................................................................................................... ....................................................................................................................................................................................

3. Ketika bersuhu 25oC panjang kaca adalah 50 cm. Setelah dipanaskan, panjang kaca menjadi 50,9 cm. Koefisien muai panjang kaca α = 9 x 10-6 C-1. tentukan Suhu akhir kaca! .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... ....................................................................................................................................................................................

4. Perhatikan gambar bimetal berikut ini!

Jika ukuran kedua logam adalah sama sedangkan koefisien muai panjang logam B lebih besar daripada koefisien logam A, gambarkan bimetal tersebut setelah dipanaskan! .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... ....................................................................................................................................................................................

5. Para pekerja sedang mengerjakan pemasangan rel kereta api. Panjang batang rek kereta api masing-masing 8 m dipasang pada suhu 200C. Ketika suhu naik menjadi 300C, diharapkan rel tersebut saling bersentuhan. Jika koefisien muai panjang rel adalah 12 x 10-6 /oC. Tentukan jarak antara kedua batang rel yang diperlukan pada suhu 200C ! .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... ....................................................................................................................................................................................

Berdasarkan aktivitas yang sudah kalian lakukan, buatlah kesimpulan terkait dengan faktor-faktor pemuaian serta pengaruh koefisien muai panjang terhadap kemampuan memuai panjang! ............................................................................................................................................................................................. ............................................................................................................................................................................................. ............................................................................................................................................................................................. ............................................................................................................................................................................................. .............................................................................................................................................................................................

Kegiatan belajar 3 <<

1. Perhatikan gambar berikut!

Ayo simpulkan!

Gb 1. Embun di pagi hari

https://podjokqolbuku.wordpress.com/2010/05/22/si-embun-pagi/comment-page-3/

IPA – 3.4 / 4.4 / 1 / 1.1

UKBM MTsN 1 Lumajang 9

Untuk lebih memahami materi ini bacalah buku teks pelajaran (BTP): IPA FISIKA untuk SMP/ MTs Kelas VII . Jakarta: Erlangga hal. 164 s.d. 174. Kemudian lanjutkan dengan melakukan aktivitas berikut ini 1. Perhatikan gambar tentang memasak air berikut ini!

(https://www.tokopedia.com/pasarkrempyeng/panci-utk-mendidihkan-air)

a. jika teko A diisi air dengan jumlah yang lebih banyak daripada teko B, manakah yang menurut kamu akan lebih cepat mendidih? Berikan penjelasan! ................................................................................................................................................................... ................................................................................................................................................................... ................................................................................................................................................................... ...................................................................................................................................................................

b. jika teko A diisi air gula dan teko B diisi air dengan jumlah yang sama, manakah teko yang menurut kamu lebih cepat mendidih? Berikan penjelasan! ................................................................................................................................................................... ................................................................................................................................................................... ................................................................................................................................................................... ...................................................................................................................................................................

c. Faktor-faktor apa yang mempengaruhi air di dalam teko tersebut cepat mendidih atau tidak! ................................................................................................................................................................... ................................................................................................................................................................... ................................................................................................................................................................... ................................................................................................................................................................... ...................................................................................................................................................................

2. Dua buah larutan A dan B memiliki kalor jenis yang berbeda, kalor jenis larutan A lebih besar daripada kalor jenis larutan B. Jika kedua larutan dipanaskan dalam waktu dan jumlah yang sama, menurut kamu larutan mana yang akan memiliki suhu lebih tinggi? .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... ..........................................................................................................................................................................

3. Perhatikan grafik pemanasan es berikut!

(https://idschool.net/smp/fisika-smp/rumus-kalor-dan-contoh-soal-grafik-perubahan-zat/)

Pernahkah kalian memperhatikan daun-daun di pagi hari yang berembun? Darimana

embun itu datang, padahal malam hari tidak hujan?

IPA – 3.4 / 4.4 / 1 / 1.1

UKBM MTsN 1 Lumajang 10

a. Berdasarkan grafik di atas, bagaimanakah kondisi es jika berada di antara A-B, di titik B, di titik C, dan di titik E! ................................................................................................................................................................... ................................................................................................................................................................... ................................................................................................................................................................... ................................................................................................................................................................... ...................................................................................................................................................................

b. Apa yang perlu dilakukan agar es berubah posisi dari A- C dan E – C? ................................................................................................................................................................... ................................................................................................................................................................... ................................................................................................................................................................... ................................................................................................................................................................... ...................................................................................................................................................................

c. Peristiwa apa saja yang terjadi selama proses A-B-C-D-E-F? ................................................................................................................................................................... ................................................................................................................................................................... ................................................................................................................................................................... ................................................................................................................................................................... ...................................................................................................................................................................

d. Peristiwa apa saja yang terjadi selama proses F-E-D-C-B-A? ................................................................................................................................................................... ................................................................................................................................................................... ................................................................................................................................................................... ................................................................................................................................................................... ...................................................................................................................................................................

Agar lebih memahami materi tentang kalor, kerjakan soal berikut ini! 1. Berapa energi kalor yang diperlukan untuk memanaskan 2 kg besi yang kalor jenisnya 460

J/kg0C, dari suhu 15 0C sampai 100 0C? ..................................................................................................................................................................................... ..................................................................................................................................................................................... ..................................................................................................................................................................................... .....................................................................................................................................................................................

2. Perhatikan grafik yang menggambarkan pemanasan 2 kg es.

Jika kalor jenis es 2100 J/Kg0C, kalor lebur es 336.000 J/Kg dan kalor jenis air 4200 J/Kg0C. Tentukan banyaknya kalor yang diperlukan pada proses F ke H! ..................................................................................................................................................................................... ..................................................................................................................................................................................... ..................................................................................................................................................................................... ..................................................................................................................................................................................... ..................................................................................................................................................................................... .....................................................................................................................................................................................

3. Sebuah teko listrik diisi air sebanyak 1,5 kg dengan suhu 25°C. Jika kalor yang diserap 12.600 joule dan kalor jenis air = 4.200 J/kg°C, tentukan suhu akhir air tersebut! ..................................................................................................................................................................................... ..................................................................................................................................................................................... ..................................................................................................................................................................................... .....................................................................................................................................................................................

Ayo berlatih!

IPA – 3.4 / 4.4 / 1 / 1.1

UKBM MTsN 1 Lumajang 11

..................................................................................................................................................................................... .....................................................................................................................................................................................

4. Es yang bermassa 1600 gram dengan suhu awal 00C dipanaskan hingga berubah menjadi air bersuhu 15 0C. Jika diketahui kalor jenis es 2100 J/Kg0C, kalor lebur es 336.000 J/Kg dan kalor jenis air 4200 J/Kg0C. Tentukan banyaknya kalor yang diperlukan dalam proses tersebut! ..................................................................................................................................................................................... ..................................................................................................................................................................................... ..................................................................................................................................................................................... ..................................................................................................................................................................................... ..................................................................................................................................................................................... .....................................................................................................................................................................................

5. Secangkir air yang massanya 200 gram dan suhunya 500C, kemudian dimasukkan sepotong es yang massanya 100 gram dan suhunya 00C. Apabila kalor jenis air 1 kal/g 0C, kalor jenis es 0,5 kal/g 0C, kalor lebur es 80 kal/g dan semua es dianggap mencair. Tentukan suhu akhir campuran air dan es tersebut! ..................................................................................................................................................................................... ..................................................................................................................................................................................... ..................................................................................................................................................................................... ..................................................................................................................................................................................... ..................................................................................................................................................................................... .....................................................................................................................................................................................

Kegiatan belajar 4 <<

Perhatikan gambar berikut!

1. Agar lebih memahami materi terkait dengan proses pembiasan cahaya, bacalah buku teks

pelajaran (BTP): IPA FISIKA untuk SMP/ MTs Kelas VII . Jakarta: Erlangga hal. 150 s.d. 164. Kemudian lakukan percobaan sesuai dengan Lembar Kerja Siswa yang telah dibagikan

Gb1. Tungku pembakaran

Gambar di atas menunjukkan sebuah tungku pembakaran yang dulu banyak dimiliki orang-orang, terutama mereka yang hidup di daerah dingin. Tungku ini memiliki banyak fungsi, selain dapat digunakan untuk memanaskan air juga digunakan sebagai penghangat ruangan. Tapi pernah kalian berpikir bagaimana cara tungku tersebut mengalirkan panasnya ke teko sehingga air di dalamnya mendidih? Atau bagaimana caranya panas dari tungku bisa menghangatkan ruangan?

IPA – 3.4 / 4.4 / 1 / 1.1

UKBM MTsN 1 Lumajang 12

2. Setelah melakukan percobaan, lanjutkan dengan mengerjakan aktivitas berikut bersama dengan kelompokmu

Agar lebih memahami konsep perpindahan kalor, kerjakan soal di bawah ini! 1. Perhatikan gambar berikut ini!

(https://www.ebookanak.com/pengetahuan/seri-sains-anak-alam-semesta-rahasia-keajaiban-

udara/kenapa-nelayan-tradisional-membutuhkan-angin-darat/)

a. Mengapa pada saat malam hari angin bertiup dari darat ke laut? .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... ..........................................................................................................................................................................

b. Gambarkan aliran angin pada saat malam hari? .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... ..........................................................................................................................................................................

2. Perhatikan gambar berikut!

a. Mengapa pada saat siang hari angin bertiup dari laut ke darat?

.......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... ..........................................................................................................................................................................

b. Gambarkan aliran angin pada saat siang hari! .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... .......................................................................................................................................................................... ..........................................................................................................................................................................

Ayo berlatih!

IPA – 3.4 / 4.4 / 1 / 1.1

UKBM MTsN 1 Lumajang 13

3. Doni dan dino berjanji akan olahraga lari pada jam 8.00 WIB. Pada saat itu doni memakai kaos

hitam, sedangkan dino memakai kaos putih. Mereka berolah raga sampai pukul 09.00. Menurut kamu siapa yang akan lebih berkeringat? Berikan alasanmu! .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... ....................................................................................................................................................................................

4. Perhatikan gambar berikut!

(https://www.pontianakpost.co.id/berawal-dari-hobi-memasak)

Berdasarkan gambar di atas, kalau diperhatikan bahwa orang tersebut menggunakan logam akan tetapi orang tersebut seakan tidak merasa panas. Berikan analisismu terkait hal tersebut! ......................................................................................................................................................................................................... ......................................................................................................................................................................................................... ......................................................................................................................................................................................................... ......................................................................................................................................................................................................... ......................................................................................................................................................................................................... .........................................................................................................................................................................................................

Berdasarkan aktivitas yang sudah kalian kerjakan jawablah pertanyaan berikut ini! 1. Bagaimana hubungan antara jumlah skala Celcius, Reamur, Kelvin dan Farenheit?

.................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... ....................................................................................................................................................................................

2. Bagaimana pengaruh koefisien muai panjang terhadap kemampuan pemuaian benda? .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... ....................................................................................................................................................................................

3. Bagaimana pengaruh kalor jenis benda terhadap perubahan suhu benda? .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... ....................................................................................................................................................................................

4. Bagaimana proses perubahan wujud es menjadi uap air? .................................................................................................................................................................................... .................................................................................................................................................................................... .................................................................................................................................................................................... ....................................................................................................................................................................................

5. Bagaimana proses perpindahan kalor secara radiasi, konveksi, dan konduksi? .................................................................................................................................................................................... .................................................................................................................................................................................... ....................................................................................................................................................................................

Ayo simpulkan!

IPA – 3.4 / 4.4 / 1 / 1.1

UKBM MTsN 1 Lumajang 14

Bagaimana Anda sekarang? Setelah Anda belajar bertahap dan berlanjut melalui kegiatan belajar 1, 2, 3 dan 4, berikut diberikan tabel untuk mengukur diri Anda terhadap materi yang sudah dipelajari. Jawablah sejujurnya terkait dengan penguasaan materi pada UKBM ini di tabel berikut! Tabel Refleksi Diri Pemahaman Materi

No Pertanyaan Ya Tidak

1. Apakah Anda telah memahami tentang hubungan antara jumlah skala Celcius, Reamur, Kelvin dan Farenheit?

2. Apakah Anda telah memahami pengaruh koefisien muai panjang terhadap kemampuan pemuaian benda?

3. Apakah Anda telah memahami pengaruh kalor jenis benda terhadap perubahan suhu benda?

4. Apakah Anda telah memahami proses perubahan wujud es menjadi uap air?

5. Dapatkah Anda memberikan contoh pembiasan cahaya yang ada di sekitar kita?

6. Apakah Anda sudah memahami proses perpindahan kalor secara radiasi, konveksi, dan konduksi?

Jika menjawab “TIDAK” pada salah satu pertanyaan di atas, maka pelajarilah kembali materi tersebut dalam buku teks pelajaran (BTP) dan pelajari ulang kegiatan belajar 1 dan 2 yang sekiranya perlu Anda ulang dengan bimbingan guru atau teman sejawat. Jangan putus asa untuk mengulang lagi!. Apabila Anda menjawab “YA” pada semua pertanyaan, lanjutkanlah ke UKBM berikutnya. Di mana posisi Anda? Ukurlah diri Anda dalam menguasai materi suhu, pemuaian, dan kalor dalam rentang 0 – 100, tuliskan ke dalam kotak yang tersedia.

DAFTAR PUSTAKA

McGraw-Hill Companies, Inc. 2005. Glencoe Science Waves, Sound, and Light. USA: Columbus Tim Abdi Guru. 2017. IPA FISIKA UNTUK SMP/MTs KELAS VIII. Jakarta: Penerbit Erlangga

c. Penutup