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- 1. Multiple Choice
Q1.If you press down on a piano key it makes a sound wave. Now you press the key harder, and it's louder. How did that change the sound wave?
The sound's amplitude and energy increased.
The sound's wavelength increased.
The sound's frequency increased.
The sound's energy would decrease
- 2. Multiple Choice
A frequency of one sound wave per second is...
a hertz
a decibel
a pitch.
an intensity.
- 3. Multiple Choice
An echo is created when a sound is
absorbed.
scattered.
refracted
reflected.
- 4. Multiple Choice
Sound waves moving in a regular pattern is...
echoes.
noise.
music.
none of the above
- 5. Multiple Choice
Somebody yelling is an example of ....
mechanical
chemical
heat
sound
- 6. Multiple Choice
Sound does not travel through....
wooden doors.
outer space.
water.
steel rails.
- 7. Multiple Choice
The Doppler Effect changes the..
loudness.
pitch.
intensity.
resonance.
- 8. Multiple Choice
The hammer, anvil , and stirrup are in the ....
cochlea.
outer ear.
middle ear
inner ear.
- 9. Multiple Choice
Sonar is used to find......
angle of reflection.
speed.
time.
distance.
- 10. Multiple Choice
In what substance does speed travel the slowest?
air
steel
rubber
water
- 11. Multiple Choice
Sound travels faster through 25 degrees Celsius than 0 degrees Celsius. This shows that sound travels......
only at temperatures above 0 degrees Celsius.
more slowly at lower temperatures.
faster at lower temperatures.
more slowly at higher temperatures.
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