Physics Test 15B
 
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Physics Test 15B

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

Water surface waves are
a.
longitudinal and perpendicular waves.
c.
longitudinal and transverse waves.
b.
transverse and horizontal waves.
d.
vertical and horizontal waves.
 

 2. 

A sound wave in air has a frequency of 680 cycles per second. What is the approximate wavelength of the sound wave?
a.
680 m
c.
340 m
b.
0.5 m
d.
20 m
 

 3. 

A person is standing still and listening to a siren sounding an alarm. The frequency of the sound is 500 Hz. The person begins running toward the sound at a rate of 20 m/s. The frequency of the sound the person hears will
a.
remain the same.
c.
decrease.
b.
increase.
d.
change by 20 Hz.
 

 4. 

Sound waves from a radio generally travel in which medium?
a.
air
c.
light
b.
earth
d.
water
 

 5. 

If a transverse wave is moving from right to left, the individual particles in the medium are moving
a.
right to left.
c.
up and down.
b.
left to right.
d.
None of the above
 

 6. 

Waves are often caused by
a.
potential energy.
c.
colliding objects.
b.
mechanical energy.
d.
vibrating objects.
 

 7. 

The _____ of a longitudinal wave radiates outward from its source, while the particles vibrate back and forth about their original positions.
a.
medium
c.
crest
b.
wave front
d.
kinetic energy
 

 8. 

Our eyes can detect light only within a range of _____ called visible light.
a.
frequencies
c.
mediums
b.
speeds
d.
periods
 

 9. 

The maximum displacement of a particle by a wave is called
a.
amplitude.
c.
frequency.
b.
wavelength.
d.
period.
 

 10. 

The _____ is the distance between two crests of a wave.
a.
amplitude
c.
frequency
b.
wavelength
d.
period
 

 11. 

The _____ is the time it takes for one full vibration of a particle in a medium.
a.
period
c.
amplitude
b.
frequency
d.
wave speed
 

 12. 

_____ is the inverse of period.
a.
Wavelength
c.
Frequency
b.
Crest
d.
Amplitude
 

 13. 

Calculate the wave speed for a wave with a wavelength of 2 m and a frequency of 0.3 Hz.
a.
0.6 m/s
c.
0.15 m/s
b.
1.67 m/s
d.
2.3 m/s
 

 14. 

What is the period of a wave with a wave speed of 50 m/s and a wavelength of 10 mm?
a.
2 s
c.
0.02 s
b.
0.2 s
d.
0.0002 s
 

 15. 

The speed of a sound wave
a.
depends on wavelength.
c.
depends on amplitude.
b.
depends on the medium.
d.
None of the above
 

 16. 

Waves travel quickly in a _____ because the molecules are closely packed and physically bonded together.
a.
liquid
c.
solid
b.
gas
d.
None of the above
 

 17. 

The Doppler effect is an observed change in a wave’s
a.
wavelength.
c.
amplitude.
b.
period.
d.
frequency.
 

 18. 

Water waves
a.
transport energy and water.
c.
transport water but not energy.
b.
transport energy but not water.
d.
are not mechanical waves.
 

 19. 

The medium seismic waves travel through is
a.
a vacuum.
c.
air.
b.
rocks.
d.
energy.
 

 20. 

Sound waves are
a.
transverse waves.
c.
circular waves.
b.
longitudinal waves.
d.
polarized waves.
 

 21. 


mc021-1.jpg

The amplitude of the wave in the diagram above is
a.
6 m.
c.
0.5 m.
b.
3 m.
d.
1 m.
 

 22. 

A wave has a period of 0.25 seconds. The frequency of this wave is
a.
25 seconds.
c.
4 hertz.
b.
0.25 hertz.
d.
2 hertz.
 

 23. 

A child is sending pulses down a stretched rope at a rate of 2 pulses per second. The distance between the pulses is 5 meters. What is the speed of the wave?
a.
5 m/s
c.
2 Hz
b.
10 m/s
d.
2.5 m/s
 

 24. 

The frequency of a sound wave determines
a.
the pitch of the sound.
c.
how fast the sound travels.
b.
how loud the sound is.
d.
the magnitude of the compression.
 

 25. 

A wave front is
a.
the first part of a wave.
b.
a surface made up of all the points on a wave that have the same energy.
c.
a line connecting a crest and a trough.
d.
the initial disturbance of the medium.
 

 26. 

The differences in color in visible light, such as those in a rainbow, are caused by differences in
a.
amplitude.
c.
medium.
b.
speed.
d.
frequency.
 

 27. 

A wave x meters long has a speed of y meters per second. The frequency of the wave is
a.
x/y.
c.
yx.
b.
y/x.
d.
y + x.
 

 28. 

Sound waves
a.
require a medium.
c.
are not mechanical waves.
b.
are unrelated to vibrations.
d.
can travel in a vacuum.
 

 29. 

Light waves are
a.
transverse waves.
c.
rotating waves.
b.
longitudinal waves.
d.
circular waves.
 

 30. 


mc030-1.jpg

The wavelength of the wave in the diagram above is
a.
6.0 m.
c.
3 m.
b.
1.5 m.
d.
0.75 m.
 



 
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