Easy way to teach science calculations based

05/03/2023Authority of Mrs Savithri Perumal. S.M. St. John, Tuaran

1

Kaedah Mudah Menjawab Soalan

Sains Menggunakan

Formula Segi Tiga

Pengiraan cara mudah (Model Formula Segi Tiga)

÷Multiple

Divide

x

05/03/2023Authority of Mrs Savithri Perumal. S.M. St. John, Tuaran

3

FORM 1 (MATTER)

density = (g/cm³)

mass (g)volume (cm³)

m (g)

V (cm³)

d(g/cm³)

:x

05/03/2023Authority of Mrs Savithri Perumal. S.M. St. John, Tuaran

4

FORM 1 (MATTER)

density = (g/cm³)

mass(g)volume (cm³)

mass (g)

volume

(cm³)

density

(g/cm³)

TINGKATAN 1 (JIRIM)

Ketumpatan = Jisim(g)Isipadu (cm³)

Jisim (g)

Isipadu

(cm³)

Ketumpatan (g/cm³)

CONTOH SOALAN PMR 2008

Metal block X has a mass of 500g and volume of 50 cm³. What is the density of metal X?

Satu blok logam X mempunyai jisim 500 g dan 50 cm³ isipadu. Berapakah ketumpatan bagi logam X?

05/03/2023Authority of Mrs Savithri Perumal. S.M. St. John, Tuaran

Mercury has density of 13.6 g/cm³. What is the volume of mercury if it has a mass of 88g ?

Ketumpatan merkuri ialah 13.6 g/cm³. Berapakah isipadu merkuri tersebut jika ia mempunyai jisim sebanyak 88g ?

Authority of Mrs Savithri Perumal. S.M. St. John, Tuaran

The density of cork is 0.25 g/cm³. What is the mass of 10cm of cork?

Ketumpatan sebuah gabus ialah 0.25 g/cm³. Berapakah jisim gabus itu jika isipadunya ialah 10cm³?

Link to Calculation

Authority of Mrs Savithri Perumal. S.M. St. John, Tuaran

FORM 2 Work done (J) = force(N) X

distance moved (m)

W(J) or Nm d(m

)f(N)

Authority of Mrs Savithri Perumal. S.M. St. John, Tuaran

05/03/2023

10

POWER (W)

P (W) t (s)

Work done (J) Time (s)

W (J)

Authority of Mrs Savithri Perumal. S.M. St. John, Tuaran

05/03/2023

11

FORM 3 (ELECTRICITY) Ohm’s Law

V(voltage/v)

R(resistance / (Ω)

I(current/A)

Authority of Mrs Savithri Perumal. S.M. St. John, Tuaran

TINGKATAN TIGA (ELEKTRIK) Hukum Ohm’s

Voltan (V)

Rintangan (Ω)

Arus elektrik

(A)

05/03/2023Authority of Mrs Savithri Perumal. S.M. St. John, Tuaran

13

FORMULASERIES PARALLEL

Vt = V1 + V2 + V3

Rt = R1 + R2 + R3

Vt = V1 = V2 = V3

It = I1 = I2 = I3 It = I1 + I2 + I3

1 = 1 + 1 + 1Rt R1 R2 R3

05/03/2023

14

Kiraan bagi: Current/Rate of Fuse

P(Power (W)

VVoltage (v)

ICurrent (A)

Authority of Mrs Savithri Perumal. S.M. St. John, Tuaran

Kiraan bagi: Arus elektrik/Kadar fius

Kuasa (W)

Voltan (V)Arus elektrik (A)

Authority of Mrs Savithri Perumal. S.M. St. John, Tuaran

Kiraan bagi: Energy/E

Power /w Time/s

Energy/E

Authority of Mrs Savithri Perumal. S.M. St. John, Tuaran

05/03/2023

17

Kiraan bagi: Cost

Power(/KW

Time/h

Energy/KWh

Authority of Mrs Savithri Perumal. S.M. St. John, Tuaran

05/03/2023Authority of Mrs Savithri Perumal. S.M. St. John, Tuaran

18

Kiraan bagi: Tenaga /Kos bayaran

Kuasa (kW)

Masa (s)

Tenaga (kwh)

05/03/2023Authority of Mrs Savithri Perumal. S.M. St. John, Tuaran

19

Terima kasih atasPerhatian anda