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WorksheetsPHYS 1305 Ch. 19 & 20 Review
Total questions: 20
Worksheet time: 13mins
On a normal day, you watch a person chopping wood and note that after the last chop you hear it 1 second later. How far away is the chopper?
330 m
more than 330 m
less than 330 m
There's no way to tell.
You hear thunder 2 seconds after you see a lightning flash in an average temperature thunderstorm. How far away is the lightning?
340 m/s
660 m/s
More than 660 m/s
There's no way to tell.
Reverberations are best heard when you sing in a room with...
carpeted walls.
hard-surfaced walls.
open windows.
None of these choices.
When air near the ground on a warm day is warmed more than the air above, sound tends to bend...
upward.
downward.
at right angles to the ground.
None of these choices.
In the evening, when air directly above a pond is cooler than air above, sound across a pond tends to bend...
upward.
downward.
at right angles to the ground.
None of these choices.
Wave interference is a property of...
sound.
light.
neither sound nor light.
both sound and light.
A 1-meter-long pendulum has a bob with a mass of 1 kg. Suppose that the bob is now replaced with a different bob of mass 2 kg, how will the period of the pendulum change?
It will double.
It will halve.
It will remain the same.
There is not enough information.
A 1-meter-long pendulum has a bob with a mass of 1 kg. Suppose that the bob is now tied to a different string so that the length of the pendulum is now 2 m. How will the period of the pendulum change?
It will increase.
It will decrease.
It will remain the same.
There is not enough information!
A 1-meter-long pendulum has a bob with a mass of 1 kg. Suppose that the bob is now tied to a different string so that the length of the pendulum is now 2 m. How will the frequency of the pendulum change?
It will increase.
It will decrease.
It will remain the same.
There is not enough information!
If the frequency of a particular wave is 20 Hz, its period is:
1/20 second.
20 seconds.
more than 20 seconds.
None of these choices.
A sound wave has a frequency of 500 Hz. What is the period of vibration of the air molecules due to the sound wave?
1 s
0.01 s
0.002 s
0.005 s
A wave with wavelength 10 meters and time between crests of 0.5 second is traveling in water. What is the wave speed?
0.1 m/s
2 m/s
5 m/s
20 m/s
The wavelength of a longitudinal wave is the distance between:
successive compressions.
successive rarefactions.
either successive compressions or rarefactions.
neither successive compressions or rarefactions.
The distance between adjacent peaks in the direction of travel for a transverse wave is its:
frequency.
period.
wavelength.
amplitude.
Which of the following is NOT a property of waves?
frequency
period
free fall
amplitude
The vibrations along a transverse wave move in a direction
along the wave.
perpendicular to the wave.
both along and perpendicular to the wave.
neither along nor perpendicular to the wave.
The vibrations along a longitudinal wave move in a direction
along the wave.
perpendicular to the wave.
both along and perpendicular to the wave.
neither along nor perpendicular to the wave.
The Doppler effect occurs for:
sound.
light.
both sound and light.
neither sound nor light.
When light from a star is observed to be somewhat reddish, what is its motion in relation to the observer?
The star is moving away from the observer.
The star is moving towards from the observer.
The star is not moving in relation to the observer.
The color tells nothing of the motion of the star.
When light from a star is observed to be somewhat bluish, what is its motion in relation to the observer?
The star is moving away from the observer.
The star is moving towards from the observer.
The star is not moving in relation to the observer.
The color tells nothing of the motion of the star.
