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Q 1/25
Score 0
Sound waves
30
are longitudinal waves.
do not require a medium for transmission.
are transverse waves.
are a part of the electromagnetic spectrum.
Q 2/25
Score 0
Which of the following is the region of a sound wave in which the density and pressure are greater than normal?
30
wavelength
amplitude
rarefaction
compression
25 questions
Q.
Sound waves
1
30 sec
Q.
Which of the following is the region of a sound wave in which the density and pressure are greater than normal?
2
30 sec
Q.
The highness or lowness of a sound is perceived as
3
30 sec
Q.
In general, sound travels faster through
4
30 sec
Q.
A train moves down the track toward an observer. The sound from the train, as heard by the observer, is ________________ the sound heard by a passenger on the train.
5
30 sec
Q.
The Doppler effect occurs with
6
30 sec
Q.
The perceived loudness of a sound is measured in
7
30 sec
Q.
When the frequency of a force applied to a system matches the natural frequency of vibration of the system, ______________ occurs.
8
30 sec
Q.
Audible beats are formed by the interference of two waves
9
30 sec
Q.
Of the following materials, sound waves travel fastest through
10
30 sec
Q.
At a distance of 3 m, the intensity of a sound will be _____________ the intensity it was at a distance of 1 m.
11
30 sec
Q.
The Tacoma Narrows bridge collapsed in 1940 when winds caused ______________ to build up in the bridge.
12
30 sec
Q.
Musical instruments of different types playing the same note may often be identified by the ______________ of their sounds.
13
30 sec
Q.
How many beats per second are heard when two vibrating tuning forks having frequencies of 342 Hz and 345 Hz are held side by side?
14
30 sec
Q.
Points of maximum amplitude on a standing wave are called
15
30 sec
Q.
How many nodes does this standing wave have?
16
30 sec
Q.
How many antinodes does this standing wave have?
17
30 sec
Q.
If the picture represents a 0.75 m long guitar string vibrating, what is the wavelength of the sound produced?
18
30 sec
Q.
If a sound wavelength gets smaller what do you hear?
19
30 sec
Q.
If a sound Amplitude gets smaller what do you hear?
20
30 sec
Q.
When a wave strikes an object and bounces back that is
21
30 sec
Q.
The bending of a wave caused by the change in its speed
22
30 sec
Q.
When an object causes a wave to change direction and bend around it
23
30 sec
Q.
What is the observed frequency when the observer is moving away from the source at 125m/s? The source frequency is 237Hz and the speed of sound is 325m/s.
24
30 sec
Q.
In which of the following situations is the Doppler effect absent?
