Physics Unit 4 Test Version A

Name:______Physical Science Physics Unit 4 Test Version A

1. Identify each of the waves below as transverse or longitudinal.

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2. In the diagram above, identify the part of the wave that is represented by each letter.

A. ______

B. ______

C. ______

D. ______

3. The color of a light wave is related to the ______of the wave.

4. The velocity of sound in air is approximately 335 m/s. What is the wavelength of a 205 Hz wave? 5. Sandy is creating a water wave by wiggling a slinky (back and forth) three times every second. Her friend Jim measures the distance from one crest to the next to be 65 cm. What is the speed of the wave?

6. In each pair circle the medium in which sound waves will travel faster.

A Copper wire Salt water

B Air on a cold winter Air on a warm summer day day C Copper wire Air

7. What are the two factors that affect the speed of a wave?

Temperature Amplitude Wavelength Medium Frequency

8. A sound wave represents a (longitudinal / transverse) wave.

9. The frequency of the wave tells you the ______or the note that the wave represents. a. density b. loudness c. pitch d. wavelength

10.The ______of the wave is represented by the amplitude. a. density b. loudness c. pitch d. speed

11.A particle of light is called a ______.

12.In the diagram below which man will be perceive a higher frequency than normal?

13.The Doppler Effect is the principle that moving sources will change the ______of the sound wave. a. pitch b. density c. loudness d. amplitude 14.Can light travel in a vacuum (like space)? Yes/no

15.A light wave represents a (longitudinal / transverse) wave.

16.Rank the following waves from smallest to largest wavelength: visible light, ultraviolet, X- rays, microwaves

______

17.What “color” is produced if very little or no light is reflected by an object? ______