1. Draw a 4 x 4 square on your paper. You should have 16 squares in total. 2. Using your Spectrum book and the information on the board fill each square.

1. Draw a 4 x 4 square on your paper. You should have 16 squares in total.

2. Using your Spectrum book and the information on the board fill each square with a vocabulary word. Not all vocabulary words will be highlighted. They maybe italicized. There are at least three words on the board to get you started.

Chapter 11Examples

Sound Wave Air (medium)

Seismic Wave Earth (medium)

Pond, ocean, sea, river Wave Water (medium)

The material a wave travels through

• Mechanical wave(page 357)

• Medium

Chapter 11Wave doesn’t travel

through a mediumExamples

LightRadio

A mechanical wave has particles that move perpendicular through a medium as the wave passes – like a light wave

A mechanical waves that causes particles to vibrate parallel to the direction of wave motion – like a sound wave

• Electromagnetic Wave(page 357)

• Transverse Wave (page 363)

• Longitudinal Wave or Compression Wave(page 363)

Chapter 11A wave that occurs at the

boundary between 2 different mediums, such as between water and air.

ExamplesOcean wavesSurface seismic waves

• Surface Wave (page 364)

Journal – 11/19/09Compare and Contrast a longitudinal and transverse wave. If you need to look it up, go to page 363 in your yellow Science Spectrum book. Be sure you write the difference in your own words.

Chapter 11 – Quiz over VocabularyWave doesn’t travel

through a medium___________________________

___________________________________________________

Waves that cause particles to vibrate parallel to the motion of the wave.

Any material that a wave travels through.

1. __________

2. Transverse

3. __________

4. __________

Chapter 11 – Quiz over VocabularyA type of motion in which

the wave fades.

Sound, seismic, and water are examples of this kind of wave.

___________________________________________________.

The ability to do work.

5. __________

6. __________

7. Simple Harmonic Motion

8. __________

Quiz Answers#1 – Electromagnetic Wave#2 - A wave in which the particles travel

perpendicular to the wave.#3 – Longitudinal#4 – Medium#5 – Damped Harmonic Motion#6 – Mechanical Wave#7 – A wave that continues forever.#8 – Energy#9 – trough#10 – crest

Chapter 11 – Quiz over Vocabulary

#9 - Identify the dip of the wave. Ignore the labels and arrows.

#10 - Identify the rise of the wave. Ignore the labels and arrows.

For questions 9 and 10 use the picture to identify the parts of the wave.

9. __________

10. __________

Focused 2-minute free writeWrite everything you can about waves. If you get stuck on an idea or can’t think of something, write the last sentence you wrote over and over until a new thought comes to you. Turn your paper in.

Journal – December 7, 2009Draw and label 2 types of waves.

Compare and contrast period and frequency. (refer to page 367)

Parts of WavesParts of a Transverse wave.

http://www.antonine-education.co.uk/New_items/MUS/images/Making6.gif

Trough

Crest

Chapter 11A change in position that

resembles an up and down motion.

The low portion of a wave

The high portion of a wave

• oscillates

• Trough

• Crest

Parts of a Wave continued.Parts of a Longitudinal or Compression Wave

http://www.gcsescience.com/Longitudinal-Wave.gif

Chapter 11.2Wavelength

(pg 366)

Period (pg 367 – figure 11-11)

• The distance from one crest of a wave to the next crest or trough to trough or compression to compression.

• The time required for one full wavelength of a wave to pass a certain point and the time required for one complete vibration of a particle in a medium.

Chapter 11.2Frequency

(pg 367)

Frequency-Period Equation(pg 367)

Wave Speed (pg 369)

• The number of full wavelengths that pass a point in a given time.

• The frequency is the inverse of a period.

• How fast a wave moves. Calculate it by dividing the wavelength by distance of one wavelength (period) or wavelength times its frequency

Practice calculating wave speedPage 370 – Math SkillsPiano – mid C vibrates at a frequency of 264 Hz

_ sound waves produced have a wavelength in the air of 1.30 m. What is the speed of sound in air?

V(velocity) = frequency times wavelength

264 Hz x 1.30 m = 343 m/s (In the book they converted Hz to seconds.)

Chapter 11.2What affects

wave speed (pg 370-371)

• Sound Waves - type of medium, the arrangement of particles in a medium (states of matter)•Light Waves – doesn’t need a medium to travel through

•When it does travel through a medium like air or water it slows down.

•

Chapter 11.2Doppler

Effect(pg 372-373)

• Pitch is determined by the frequency at which sound waves strike the eardrum in your ear.

•The doppler effect then is an observed change in the frequency of a wave when the sound source or the observer moves.

Journal – December 12/8/09Explain Constructive and Destructive Interference.

Page 376 – 377.

Describe standing waves.Page 379

Chapter 11.3 – Wave InteractionsThe bouncing back of a wave

when it meets a surface or boundary.

The bending of waves around a barrier or an edge.

Reflection (page 374)

Diffraction (page 375)

Chapter 11.3 – Wave InteractionsThe bouncing back of a wave

when it meets a surface or boundary.

The bending of waves around a barrier or an edge.

Refraction (page 376)

Diffraction (page 375)

Chapter 11.3 – Wave InteractionsThe bouncing back of a wave

when it meets a surface or boundary.

Constructive Interference occurs when 2 waves line up and crests overlap making a larger wave.

Reflection (page 374)

Constructive Interference (pg 377)

http://www.rkm.com.au/ANIMATIONS/animation-graphics/prism-dispersing-light.jpg

dev.physicslab.org

Chapter 11.3 – Wave InteractionsAny interference in which

waves combine so that the new wave is smaller than the original waves..

Destructive Interference Reflection (page 377)

Chapter 11.3 – Wave InteractionsA wave formed by interference

that appears not to move – speed amplitude and frequency are the same.

Standing Wave (page 379-380)