2. Bellwork Clear everything from your desk, except 1. Late Work 2. P/P
Wait Patiently & Quietly with your head down for further directions

3. Waves, Sound & Light Study Guide
Fill in your:
Name: _________
Date: ________
Block: _________

4. Disturbance/Disruption
1. The direction that a T_______ wave travels is P_______ to the D_______.
Transverse
Perpendicular
Disturbance/Disruption

5. Disturbance/Disruption
2. The direction that a L_______ wave travels is P_______ to the D_______.
Longitudinal
Parallel
Disturbance/Disruption

6. Medium Solid Liquid Gas
3. A M_______ is a S________, L_______ or G_______ that a wave moves through.
Medium
Solid
Liquid
Gas

7. Mechanical Medium Electromagnetic
4. A M________ wave needs a M_______ to travel, but an E_______ wave does not.
Mechanical
Medium
Electromagnetic

8. 5. Parts of a wave
Wavelength
Crest
Midpoint
Amplitude
Trough

9. 6. The unit used to measure F_________________ is _____.
Frequency
Hertz (Hz)

10. Frequency Increases Pitch
7. As F____________ I____________, P____________ I____________ as well.
Frequency
Increases
Pitch

11. Intensity Sound Decibels (dB)
8. The I____________ or loudness of S_______ is measured in ___________.
Intensity
Sound
Decibels (dB)

12. 9. The speed of sound is influenced by the M_________ that it is going through.
Medium
That means that it travels fastest in solids and slowest in gasses.
State
Speed of Sound
Gas
769 mi/h
Liquid
3,130mi/h
Solid
5,000 mi/h

13. 10. There are three different ways that light can be T____________:
Transmitted
Translucent Transparent Opaque

14. 11. When the energy of a wave bounces off an object, this is called R__________.
Reflection

15. 12. If an object “takes in” the energy of a wave, this is called A_____________.
Absorption

16. Scattering Reflection Absorption
13. S______ takes place if both R______ and A_____ happen at the same time.
Scattering
Reflection
Absorption

17. 14. R_________ happens when the S_________ of the wave C_________.
Refraction
Speed
Changes

18. 15. To see, light is first R___________ in the C___________.
Refracted
Cornea

19. 16. Then the P_________ determines how much light enters the eye.
Pupil

20. 17. Next, the L_________ refracts the light a bit more.
Lens

21. 18. The image is then focused on the R_______ before the O_______ sends the image impulse to the brain.
Retina
Optic Nerve

22. 19. The “color” of an object is the wave length that it R________
19. The “color” of an object is the wave length that it R________. All of the other wavelengths are A________, or taken in by the object.
Reflects
Absorbed

23. Finish the following while STUDYING for the test tonight!
#20 - #24

25. 25. Return to class with this study guide finished on the day of your Test.
Tuesday
November 26th
2013

26. 26. Have a parent sign in the space below or to the right.