8R Review Waves, Sound, Light. 1. What do waves carry? Energy 2. What causes all waves? Vibrations 3. What types of waves require a medium? Identify an.

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Presentation transcript:

8R Review Waves, Sound, Light

1. What do waves carry? Energy 2. What causes all waves? Vibrations 3. What types of waves require a medium? Identify an example of this type of wave. Mechanical waves, sound 4. What types of waves do not require a medium? Identify an example of this type of wave. Electromagnetic waves (can travel through a vacuum), light

7. a. What is happening to the light ray in the picture? Reflection b. Which letter represents the angle of reflection? C c. Which letter represents the angle of incidence? D d. If Angle C is 40°, what is Angle D? 40°

8. a. Which letter represents a convex lens? A b. Which letter represents a concave lens? B c. Which lens causes light rays to diverge? B d. Which lens causes light rays to converge? A AB

4 12

2 13

3 14

4 15

a. Identify the object above. prism b. Explain what happens to light as it passes through a prism. The white light is refracted and separated into different colors. 16

2 17

18. Identify the type of wave below: Transverse 19. Identify the type of wave below: Longitudinal or compressional

20. The distance from 1 crest to another is the wave’s wavelength 21. The height of a wave is known as amplitude 22. The number of waves that pass through a point within a certain amount of time is known as frequency 23. What types of waves do not require a medium? Identify an example of this type of wave. Electromagnetic waves (can travel through a vacuum), light

24. Identify the # of the wave being described: a. Longest wavelength 3 b. Shortest wavelength 4 c. Lowest frequency 3 d. Highest frequency 4

A B 25. Which wave has a greater amplitude? B

3 26

Ultraviolet light X rays Visible light microwaves 27

red Ultraviolet light Visible light 28

2 29

microwaves Visible light Ultraviolet light X rays 30

33. Explain why an object is white. It reflects all light/all colors 34. Explain why an object is black. It absorbs all light/colors

Which wave has a greater intensity (is the loudest)? Why? B – It has the greater amplitude (height). A B 37

Which wave has a greater pitch (is the highest)? Why? B – It has the greater frequency (# of waves). A B 38

1 39

DOPPLER EFFECT 43. What happens to sound waves from the siren as it moves closer to the boy on the right? Pitch increases because frequency increases and waves are closer together. 44. What happens to sound waves from the siren as it moves away from the girl on the left? Pitch decreases because frequency decreases and waves are farther apart.