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WorksheetsWaves and Sound
Total questions: 27
Worksheet time: 34mins
What type of energy does a sound wave have?
Mechanical
Radiant
Electrical
Sound
Sound waves are also known as ----- waves.
Compression
Longitudinal
Neither
Both longitudinal and compression
Areas of increased pressure on a sound wave are known as a ----
Rarefaction
Compression
Frequency
Amplitude
The distance from the beginning of one compression to the beginning of the next compression is called a -----
Rarefaction
Frequency
Wavelength
Compression
A wave of amplitude A is traveling through a rope that is fixed on both ends. Which of the following represents the wave upon return?
Two waves of amplitude A are initially traveling in the same direction through a rope that is fixed at both ends. When the two waves meet, the resultant wave will have an amplitude of:
A
A2
2A
0
A wave with amplitude A is traveling through a rope. If the rope is fixed on the left but not on the right, then which of the following represents the wave as it returns?
Two waves of amplitude A travel to the right that is fixed on the left but not on the right. When the two waves meet, the resultant wave will have amplitude:
0
2A
A
A2
A water wave has a period of 0.25 seconds and a wavelength of 0.6 meters. What is the speed of the wave?
2.4 meters
0.15 meters
0.85 meters
2.1 meters
Which of the following is true about the speed of sound through different mediums?
V(gas) > V(liquid) > V(solid)
V(liquid) > V(gas) > V(solid)
V(solid) > V(liquid) > V(gas)
V(solid) > V(gas) > V(liquid)
The length of a pipe organ is 2.4 meters. If the pipe is opened at both ends and the speed of sound in air is 343 m/s, then what is the fundamental frequency of the sound wave?
214.5 Hz
823.2 Hz
143 Hz
71.5 Hz
A guitar string−fixed at both ends−has a frequency of 247 Hz. If the velocity of the wave is 296.4 m/s, then what is the length of the guitar string?
0.6 meters
1.2 meters
1.8 meters
0.3 meters
A train moving at 20 m/s sounds it's whistle while passing a stationary observer. The apparent frequency of the observer can be seen on the graph. If the speed of sound for that day is 338 m/s, then what is the frequency of the whistle?
555 Hz
625 Hz
358 Hz
478 Hz
A stationary horn broadcasts an emergency distress signal at a constant frequency f. A stationary observer hears the signal then begins to walk away from the source. The observer will perceive a frequency that is:
constantly the same as f.
Initially the same as f, with the frequency decreasing.
always greater than f.
Initially the same as f, with the frequency increasing.
The speed of sound in water is about 1,482 m/s. If the frequency of the wave is 20 Hz, then what is the wavelength?
148.2 meters
74.1 meters
102.1 meters
98.6 meters
Which of the following is equivalent to a Hz?
meters/second
1/meters
1/seconds
seconds/meter
A string with nodes at both ends is oscillating at the fundamental frequency. if the frequency of the string doubles, the wavelength will
double
get cut in half
remain the same
quadruple
The pictured tube is 1.2 meters long. What is the wavelength of the wave inside?
0.6 m
1.2 m
1.6 m
Sound waves travel 10 times as fast through steel as they do through air. What happens to the wavelength of a 200 Hz sound wave as it enters steel from the air?
It decreases by a factor of 10.
The wavelength remains the same.
It increases by a factor of 10.
It increases by a factor of 100.
A pipe in a calliope is closed at one end and is 0.5 m long. The calliope uses hot air so that the speed of sound in the tube is 400 m/s. What is the fundamental frequency of the calliope tube?
100 Hz
200 Hz
300 Hz
400 Hz
