# Physics: The Sound Wave

## Test Quiz

Questions on this quiz are based on information from
Physics: The Sound Wave.

1. Sound waves are a special kind of wave that can be detected by _______.
a. The human eye
b. Computers
c. The human ear
d. Electronic instruments
e. Antennas

2. A sound wave cannot travel through which of the following?
a. Air
b. Water
c. Metal
d. Vacuum
e. All of the above

3. Because a sound wave must travel through a medium, it is called a ________ wave.
a. Mechanical
b. Electrical
c. Light
d. Electromagnetic
e. Induction

4. What is the source of a sound wave?
a. Electricity
b. Vibration
c. Light waves
d. Conduction
e. Tiny nuclear explosions

5. What does it mean that a sound wave is a longitudinal wave?
a. The disturbance moves perpendicular to the wave
b. The period of the wave is very long
c. The disturbance moves in the same direction as the wave
d. The wave has a very low frequency
e. The waves last for a long time

6. What do we call the region of a sound wave where the molecules are bunched closer together?
a. Interference
b. Refraction
c. Polarization
d. Rarefaction
e. Compression

7. What do we call the region of a sound wave where the molecules are spread out?
a. Interference
b. Refraction
c. Polarization
d. Rarefaction
e. Compression

8. What do we call the areas of low pressure of a sound wave ?
a. Interference
b. Refraction
c. Polarization
d. Rarefaction
e. Compression

9. The intensity of a sound wave is equal to the sound power (P) divided by the _______.
a. Area
b. Time
c. Distance
d. Energy
e. Amplitude

10. True or False: Sound waves are described as both mechanical waves and longitudinal waves.
a. TRUE
b. FALSE
c.
d.
e.

About this quiz: All the questions on this quiz are based on information that can be found on the Physics: The Sound Wave page at www.ducksters.com/science/physics/sound_wave_characteristics.php.