# Second Semester Review

Waves, Sound, Light, Electricity, Special Relativity

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1. The time it takes for a vibration to repeat is called its ___.

 A. frequency B. wavelength C. period D. amplitude

Wavelength and Amplitude

Frequency and Period

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2. A mass is hanging at the end of a string and caused to vibrate back and forth as pendulum. The time it takes to vibrate back and forth depends on its ___.

 A. mass B. amplitude C. composition D. length

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Use the above diagram to respond to questions #3-#7.

3. Which letter represents the amplitude of a wave?

4. Which letter represents the wavelength of a wave?

5. Which letter represents the maximum displacement a particle experiences during any portion of its vibration?

6. Which letter represents the total distance a wave will travel during a period?

Amplitude (#3 and #5)

Wavelength (#4 and #6)

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7. Which type of wave is represented by the diagram?

 A. transverse B. longitudinal C. sound D. surface

Categories of waves

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8. Which of the following units is used to state frequency?

 A. seconds B. meters C. newtons D. hertz

Frequency

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9. If you wished to find the speed of a wave, you could accomplish this by measuring its:

 A. amplitude and period B. wavelength and period C. wavelength and amplitude D. frequency and amplitude

v = f * lambda

Frequency-Period Relationship

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10. A wave passes from a slow medium into one in which it moves fast. Which of the following must increase?

 A. period B. frequency C. wavelength D. amplitude

Wave speed

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11. The speed of a sound wave in air depends most on ____.

 A. wavelength B. amplitude C. frequency D. temperature

Wave speed and the Speed of Sound

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12. Which of the following is not a cause of standing waves?

 A. interference B. resonance C. reflection D. refraction

What is a Standing Wave

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13. In a standing wave, the region that vibrates very little or not at all is called ___.

 A. a node B. an antinode C. the Doppler region

Nodes and Antinodes

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14. In a standing wave the distance between successive antinodes represents ____ wavelength(s).

 A. 2 B. 1 C. 1/2 D. 1/3

Nodes and Antinodes

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15. The driver of a car that is moving toward you sounds the car's horn. As a result, the frequency of the horn that you hear is ____ that heard by the driver.

 A. higher than B. lower than C. the same as

The Doppler Effect

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16. This phenomenon (in #15) is known as ___.

 A. refraction B. reflection C. resonance D. the Doppler effect

The Doppler Effect and Shock Waves

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