# Units 11 and 12 Review

Waves, Light and Sound

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1. A single disturbance that moves from point to point in a medium is called

 a. period. b. periodic wave. c. wavelength. d. pulse.

What is a Wave? (8 seconds)

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2. What type of wave is produced when the particles of the medium are vibrating to and fro in the same direction of wave propagation?

 a. longitudinal wave. b. sound wave. c. standing wave. d. transverse wave.

Categories of Waves (10 seconds)

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3. What type of wave is produced when the particles of a medium are vibrating at right angles to the direction of wave propagation?

 a. longitudinal wave. b. sound wave. c. standing wave. d. transverse wave.

Categories of Waves (10 seconds)

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4. A transverse wave is traveling through a medium. See diagram below. The particles of the medium are moving.

 a. parallel to the line joining HU. b. along the line joining TZ. c. perpendicular to the line joining HU. d. at various angles to the line TZ. e. along the curve THVIXJZ.

Categories of Waves (10 seconds)

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5. If the energy in a longitudinal wave travels from south to north, the particles of the medium move

 a. from north to south, only. b. both north and south. c. from east to west, only. d. both east and west.

Categories of Waves (10 seconds)

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6. As a pulse travels though a uniform medium, the speed of the pulse

 a. decreases. b. increases. c. remains the same.

The Speed of a Wave (10 seconds)

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7. The speed of sound depends most on the

 a. amplitude of the sound wave. b. intensity of the sound. c. loudness of the sound. d. transmitting medium. e. pitch of the sound.

The Speed of a Wave (10 seconds)

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8. As a wave travels into a medium in which its speed increases, its wavelength

 a. decreases. b. increases. c. remains the same.

The Wave Equation (7 seconds)

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9. As a wave passes into a new medium, which characteristics of the wave NEVER changes?

 a. speed b. frequency c. wavelength

The Speed of a Wave (10 seconds)

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10. What is the amplitude of the wave in diagram 5-21?

 a. 0.03 m. b. 0.04 m. c. 0.05 m. d. 0.06 m.

The Anatomy of a Wave (6 seconds)

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11. The wavelength of the wave in diagram 5-21 (above) is

 a. 0.03 m. b. 0.04 m. c. 0.06 m. d. 0.08 m.

The Anatomy of a Wave (6 seconds)

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12. A wave X meters long passes through a medium with a speed of Y meters per second. The frequency of the wave could be expressed as

 a. Y/X cycles/sec. b. X/Y cycles/sec. c. XY cycles/sec. d. (X + Y) cycles/sec.

The Wave Equation (7 seconds)

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13. How many complete waves are shown in diagram 5-39?

 a. 1 b. 2 c. 3 d. 1.5

The Anatomy of a Wave (6 seconds)

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14. If the distance from point A to point G in diagram 5-39 (above) is 60 cm, then the wavelength is

 a. 20 cm. b. 40 cm. c. 60 cm. d. 90 cm.

The Anatomy of a Wave (6 seconds)

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