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- 1. Multiple Choice
_________ is how the human ear interprets frequency.
Longitudinal
Pitch
Decibels
Medium
- 2. Multiple Choice
Sound waves propagate (move) as ______________ waves.
longitudinal
transverse
ocean
space
- 3. Multiple Choice
A ___________ is required for sound energy to move through.
pitch
decibels
medium
loudness
- 4. Multiple Choice
Sound intensity (loudness) is measured in what unit?
Pitch
Decibels
Hertz
Meters/second
- 5. Multiple Choice
The ________________ is caused by a moving sound source.
Hertz
transverse
McGurk effect
Doppler Effect
- 6. Multiple Choice
Why can't you hear in space?
In space it is too cold for sound to travel.
You can't hear in space because there are no rocks for the sound to bounce off of.
There is no medium in space for sound to travel through.
If you were in space, you really could hear.
- 7. Multiple Choice
What are the two parts of a longitudinal wave?
Crests and Troughs
Compressions and Rarefactions
Pressure and Time
Hertz and Decibels
- 8. Multiple Choice
How does increasing the length of a vibrating object affect the FREQUENCY of a sound that is produced?
The frequency would remain the same.
The frequency would also increase.
The frequency would decrease.
There frequency would be ZERO.
- 9. Multiple Choice
Check all the possible examples of the Doppler effect.
The sirens of an ambulance as they are coming toward you seem to be getting higher in pitch.
The horn of a train at a crossing getting deeper in pitch as it passes by you.
A dog howling at the moon while sitting still.
When there is a shift from small to larger wavelengths in a motion moving away from an object causing RED SHIFT, such as weather radar.
- 10. Multiple Choice
How is the speed of sound affected by an increase in air temperature?
As the temperature increases, the speed decreases.
As the temperature decreases, the speed decreases.
Temperature has no affect on the speed of sound in air.
- 11. Multiple Choice
How far are we away from a wall if a sound returns (echoes) in 6 seconds? (Speed of sound in air = 343 m/s)
2,058 meters
1,029 meters
57.17 meters
0.02 meters
- 12. Multiple Choice
What is the speed of sound in air if a sound wave travels 6000 meters in 5 seconds?1,200 meters/second
30,000 meters/second
600 meters/second
8.33 meters/second
- 13. Multiple Choice
Which of the following answers is the BEST ORDER of how your ear interprets sound?
1. Vibrations enter the ear canal. 2. The eardrum makes liquid waves in the cochlea. 3. The waves in the cochlea shake the bones in the ear. 4. The bones hit the hairs making signals for your brain.
1. Vibrations enter the ear canal. 2. The eardrum causes waves in the semi-circular canal to swirl creating sound. 3. The swirling liquid strikes the bones. 4. The bones hit the hairs and bend them over creating signals for the brain.
Vibrations enter the ear canal. 2. The eardrum vibrates hitting the hairs in the middle ear. 3. The hairs cause waves in the cochlea. 4. The waves bounce off of the brain creating the sound you hear.
1. Vibrations enter the ear canal. 2. The eardrum vibrates, shaking the bones of the middle ear. 3. The bones magnify the sound and create waves in the cochlea. 4. The waves in the cochlea hit the hairs in the liquid and create signals for your brain.
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