The Waves and Sound Game

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# The Waves and Sound Game - PowerPoint PPT Presentation

The Waves and Sound Game. Lots of fun! Win valuable prizes!. 1. The source of all wave motion is a region of variable high and low pressure. movement of matter. harmonic object. vibration. . 2. The time needed for a wave to make one complete cycle is its frequency. period.

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## The Waves and Sound Game

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Presentation Transcript

### The Waves and Sound Game

Lots of fun! Win valuable prizes!

1. The source of all wave motion is a

• region of variable high and low pressure.
• movement of matter.
• harmonic object.
• vibration.
• frequency.
• period.
• velocity.
• amplitude.
• wavelength.
• frequency.
• period.
• velocity.
• wavelength.
• amplitude.

4. The hertz is a

• unit of frequency.
• type of car.
• unit of period.
• unit of wavelength.

5. A man is standing on the shore of a beach, up to his knees in water. Every 2 seconds a wave breaks on him. What is the period of the wave?

• 2 waves per second
• 2 seconds
• 2 hertz
• 0.5 hertz

6. A wave created by shaking a rope up and down is called a

• transverse wave.
• Doppler wave.
• standing wave.
• longitudinal wave.
• constructive wave.

7. Where can you touch a standing wave on a rope without disturbing the wave?

• At a node
• At any place along the wave
• At an antinode

8. Sound waves are

• transverse waves.
• longitudinal waves.
• circular waves.
• polarized waves.

9. When two or more waves are at the same place at the same time, the resulting effect is called

• a Doppler wave.
• a shock wave.
• a period.
• interference.

10. Water waves

• transport water but not energy.
• transport energy but not water.
• transport energy and water.
• are not mechanical waves.
• resonance.
• frequency modulation.
• destructive interference.
• beats.

12. When a sound source moves towards you, what happens to the wave speed?

• It stays the same.
• It decreases.
• It increases.

13. Brianna is standing still and listening to a siren sounding an alarm. She begins running toward the sound. The frequency of the sound she hears will

• increase.
• remain the same.
• decrease.

14. A sound wave that has a higher frequency has a wavelength that is

• longer.
• shorter.

16. Compared to the speed of light, sound travels

• at about the same speed.
• faster.
• slower.

17. Sound waves in air are a series of

• high- and low-pressure regions.
• periodic disturbances.
• periodic compressions and rarefactions.
• all of the above
• none of the above

18. Sound waves

• can travel in a vacuum.
• require a medium.
• are not mechanical waves.
• are unrelated to vibrations.

19. The frequency of a sound wave determines

• how fast the sound travels.
• the magnitude of the compression.
• the pitch of the sound.
• how loud the sound is.

20. Constructive interference occurs when

• two waves of the same color overlap.
• the crests of two waves overlap.
• the crest of one wave meets the trough of another wave.
• all of the above
• none of the above

21. The intensity of a sound depends on

• the medium.
• the amplitude of the waves.
• the wavelength of the sound.
• the pitch of the sound.

22. The speed of a sound wave is determined by the

• source of the wave.
• medium of the wave.
• frequency of the wave.
• amplitude of the wave.

23. Which of the following would be most likely to transmit sound with the highest speed?

• Water in the ocean
• Steel in a bridge
• Water in a swimming pool

24. Resonance occurs when

• sound changes speed in going from one medium to another.
• an object is forced to vibrate at its natural frequency.
• sound makes multiple reflections.
• the amplitude of a wave is amplified.
• all of the above

25. Noise-canceling earphones are an example of

• beats.
• resonance.
• destructive interference.
• constructive interference.