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Waves and Sound rSPH3U Flashcards | StudBud
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Waves and Sound rSPH3U
Waves and Sound rSPH3U
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#physics
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Answers
1
Which aspect of musical sound is due to frequency?
Pitch
Loudness
Resonance
Quietness
2
Which of the following is an example of resonance?
An earthquake
A building falling down due to a consistent wind pattern
A bridge falling down
A wine glass breaking
3
In which of the following scenarios would you hear the Doppler effect?
An ambulance with its siren on speeding by you
A ball bearing traveling on your rollercoaster
An ambulance with it's siren on
A fire truck at the scene of an accident
4
Which factor would NOT affect wave speed in a guitar string?
Temperature
linear density
tension
music
5
Speeds greater than the speed of sound are called:
Ultrasonic
Infrasonic
Subsonic
Mach
6
pulse sent from one media into another is called a....
Transmitted pulse
Fixed end pulse
Super pulse
Reflected pulse
7
What is the frequency of a wave if the speed is 3.6m/s and the wavelength is 12m?
43 Hz
0.3 Hz
0.30 Hz
3.3 Hz
8
What is the speed of a wave that has a tension of 323N and a linear density of 0.281kg/m?
1150m/s
33.9 m/s
9.53 m/s
90.8 m/s
9
Which example best describes a transverse vibration?
a wave in the middle of the ocean
Sound of a child screaming
A slinky being stretched and released
10
Which word describes the highest part of a transverse wave?
Crest
Wavelength
Amplitude
Trough
11
What unit is used to measure sound intensity?
Decibels
Joules
Newtons
Watts
12
A student yells across a 1.2 km canyon and hears their echo in 0.31s. What is the v of sound?
7.7 m/s
3.9 m/s
3.9 x 103 m/s
7.7 x103 m/s
13
Which medium would allow sound to travel the fastest?
A lake
A railroad track
A mattress
Air
14
How much of a wavelength is represented with the following picture?
2
1
1 1/2
1/2
15
Which sound range is infrasonic?
20 - 20 000 Hz
> 20 000 Hz
< 20 Hz
20 Hz
16
A pendulum swings back and forth 8 times in 1.77 s. What is its frequency?
4.52 Hz
4.5 Hz
5 Hz
4 Hz
17
What is the mass of a string that has a length of 1.8m and a linear density of 0.134 kg/m?
0.24 kg
0.074 kg
0.24 g
13 kg
18
If the period of a wave is 0.87s, what is its frequency?
1.1 Hz
0.11 Hz
0.87 Hz
8.7 Hz
19
Which of the following is NOT true about stringed instruments?
Sound is produced with standing waves
They use air columns to vibrate
The string is fixed on both ends
The string has a free-end reflection
20
Which characteristic affects the frequency of a wave?
Amplitude
Mass
Wavelength
Frequenciness
21
What would be the length of a string open on both ends with a wavelength of 2.3m if n= 3? (remember Ln = n(lambda)/2)
3.5 km
2.2 m
3.5 m
1.1 m
22
What would be the speed of sound in a room that has a temperature of 21.8 degrees?
345 m/s
295 m/s
435 m/s
330 m/s
23
Which of the following is NOT a use of ultrasounds?
Identify tumours
Kill bacteria in eggs
See a fetus
Break up kidney stones
