S8P4. Students will explore the wave nature of sound and electromagnetic radiation. a. Identify the characteristics of electromagnetic and mechanical waves. b. Describe how the behavior of light waves is manipulated causing reflection, refraction diffraction, and absorption. c. Explain how the human eye sees objects and colors in terms of wavelengths. d. Describe how the behavior of waves is affected by medium (such as air, water, solids). e. Relate the properties of sound to everyday experiences. f. Diagram the parts of the wave and explain how the parts are affected by changes in amplitude and pitch.

1. The distance between a wave's crest and its trough is known as its low tide measurement. water depth. wave height. wave length.

1. The distance between a wave's crest and its trough is known as its C. wave height.

2. The lowest point of a wave is its trough. breaker. swell. crest.

2. The lowest point of a wave is its trough.

3. The highest point of a wave is its crest. breaker. trough. swell.

3. The highest point of a wave is its crest.

4. Use the diagrams below to answer this question. When a rock is dropped into a large puddle, A. the energy of the waves is greatest at the center of the puddle. B. the energy of the waves is greatest at the edge of the puddle. C. the energy of the waves is greatest between the center and edge of the puddle. D. the energy of the waves doesn't change as they move away from the center of the puddle.

4. Use the diagrams below to answer this question. When a rock is dropped into a large puddle, A. the energy of the waves is greatest at the center of the puddle.

5. As Maria stood knee-deep in the ocean, she noted how high the waves came up on her compared to the day before. Which property of waves was Maria observing? frequency wavelength amplitude speed

5. As Maria stood knee-deep in the ocean, she noted how high the waves came up on her compared to the day before. Which property of waves was Maria observing? C. amplitude

6. If a light ray hits the back of the spoon at a 30° angle, the angle that the ray will reflect off the spoon is less than 30°. 30°. more than 30°. unpredictable.

6. If a light ray hits the back of the spoon at a 30° angle, the angle that the ray will reflect off the spoon is B. 30°.

7. Which drawing is an example of reflection? B. D. C.

7. Which drawing is an example of reflection?

8. For Kathy to see the image, light must have entered her eyes 8. For Kathy to see the image, light must have entered her eyes. What specifically entered Kathy's eyes? only matter only energy both matter and energy neither matter nor energy

8. For Kathy to see the image, light must have entered her eyes 8. For Kathy to see the image, light must have entered her eyes. What specifically entered Kathy's eyes? B. only energy

9. The color red that we see depends upon the speed of the red light wave. wavelength of the red light wave. C. temperature of the red light wave. D. direction of the red light wave.

9. The color red that we see depends upon the B. wavelength of the red light wave.

10. The leaves on a tree appear to be green because the molecules of the leaves emit only green light. absorb only green light. C. absorb all colors except green. D. reflect the light back unchanged.

10. The leaves on a tree appear to be green because the molecules of the leaves C. absorb all colors except green.

11. Use the table below to answer this question. The table shows the effects of certain filters on different colors of light. Based on the table, when red light shines on a blue filter, A. no light will come out. B. blue light will come out. C. red light will come out. D. white light will come out. Light Coming In Color of Filter Coming Out red blue none white

11. Use the table below to answer this question. The table shows the effects of certain filters on different colors of light. Based on the table, when red light shines on a blue filter, A. no light will come out. Light Coming In Color of Filter Coming Out red blue none white

12. What happens as the frequency of a sound wave increases? A. The volume becomes louder. B. The volume becomes softer. C. The pitch becomes higher. D. The pitch becomes lower.

12. What happens as the frequency of a sound wave increases? C. The pitch becomes higher.

13. Use the table below to answer this question. Which correctly identifies the parts of a wave in this diagram? A. A is the crest; B is the trough; C is the wavelength. B. A is the wavelength; B is the crest; C is the trough. C. A is the trough; B is the wavelength; C is the crest. D. A is the trough; B is the crest; C is the wavelength.

13. Use the table below to answer this question. Which correctly identifies the parts of a wave in this diagram? B. A is the wavelength; B is the crest; C is the trough.

14. Waves 1 and 2 show two different sound waves 14. Waves 1 and 2 show two different sound waves. Look carefully at the two waves. In what ways do their wave characteristics differ? A. Wave 1 has a longer wavelength and lower amplitude than wave 2. B. Wave 1 has a shorter wavelength and higher amplitude than wave 2. C. Wave 1 has a longer wavelength and a higher amplitude than wave 2. D. Wave 1 has a shorter wavelength and a lower amplitude than wave 2.

14. Waves 1 and 2 show two different sound waves 14. Waves 1 and 2 show two different sound waves. Look carefully at the two waves. In what ways do their wave characteristics differ? C. Wave 1 has a longer wavelength and a higher amplitude than wave 2.

15. Which activity involves the use of a simple machine? riding on a seesaw flying a kite C. listening to a radio D. skiing down a hill

15. Which activity involves the use of a simple machine? riding on a seesaw

16. Which hill would you slide down the fastest? A. hill A B. hill B C. hill C D. It would take the same time to slide down all of the hills.

16. Which hill would you slide down the fastest? B. hill B