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- 1. Multiple Choice
When a sound wave travels through air,
the air particles
vibrate along the direction of the wave
motion
vibrate but not in any fixed direction
vibrate perpendicular to the direction of the wave motion
do not vibrate
- 2. Multiple Choice
The frequency, which is audible to the
human ear is
50 kHz
20 kHz
15000 kHz
10000 kHz
- 3. Multiple Choice
The sound waves are reflected from an
obstacle into the same medium from
which they were incident. Which of the
following changes?
speed
frequency
wavelength
none of these
- 4. Multiple Choice
The velocity of sound is independent of
temperature.
True
False
- 5. Multiple Choice
Which medium will sound travel through the fastest?
Air
Metal
Water
Space
- 6. Multiple Choice
Fill in the blank: Sound Waves travel fastest through solids because the atoms are ___________ compared to atoms in liquids and gases
Closer together
Farther apart
Harder
Smaller
- 7. Multiple Choice
What is "frequency"?
Number of times wave repeats in image
Number of times wave repeats in 1 second
Length of one wave
How often the wave happens
- 8. Multiple Choice
Which graph has a longer wavelength?
Top graph
Bottom graph
Same wavelength
- 9. Multiple Choice
Hard surfaces, such as ceramic tile, gypsum board, or wood, tend to _______ sound waves, causing ‘echo’.
transmit
diffract
refract
reflect
- 10. Multiple Choice
____ is used to describe sound waves that are reflected off of surfaces
reflection
reverberation
vibration
oscillation
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