Quiz Real World Science Sound

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Quiz: Real World Science: Sound
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INSTRUCTIONS
Please answer each question carefully
1. What is the part of the longitudinal wave where the molecules are stretched apart?
A. a crest
B. a trough
C. a rarefaction
D. a compression
2. What is the name for the speed of sound traveling through the air?
A. echolocation
B. elasticity
C. mach 1
D. supersonic
3. How does a sonar device detect the distance of objects in the water?
A. A sonar device sends out sounds and measures the time it takes to hear the echo.
B. A sonar device measures the supersonic portion of the wave.
C. A sonar device measures the elasticity of the wave.
D. A sonar device sends out a laser beam and directly measures the distance to the objects
4. How does sound travel through the air to your ear?
A. Sound travels as a decibel.
B. Sound travels as a wave.
C. Sound travels in the gaps in the air.
D. Sound travels through one molecule.
5. What type of movement produces sound?
A. an impulse
B. a decibel
C. a vibration
D. an echo
6. What property of a wave determines its pitch?
A. the medium
B. the amplitude
C. the rarefaction
D. the frequency
7. What is the distance between two crests on a wave?
A. the amplitude
B. the frequency
C. the wavelength
D. the pitch
8. Why is there no sound in outer space?
A. There is only echolocation in space.
B. There are too many other noises.
C. There is no medium in which it can travel.
D. The speed of sound is too slow for space.
9. Why does sound travel faster in water than in air?
A. because water is a denser medium than air
B. because air is a denser medium than water
C. because water has a larger wavelength than air
D. because air has a larger wavelength than water
10. What process do bats use to navigate?
A. rarefaction
B. echolocation
C. polarization
D. compression
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