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Sound
Test Description: Sections 26.4-26.5
Instructions: Answer all questions to get your test result.
1) What is the speed of sound at room temperature?
A
340 m/s
B
20 degrees Celsius
C
35 m/s
D
330 m/s
2) Compared to the speed of light, sound travels
A
at about the same speed
B
slower
C
faster
3) Which of the following would be most likely to transmit sound with the highest speed?
A
steel in a bridge
B
wood in a cabinet
C
air in the classroom
D
water in the ocean
4) Which would transmit sound faster, oxygen (mass =16) or helium (mass = 4)?
A
helium
B
oxygen
C
sound would travel at the same speed through both
5) On which type of day would sound travel the fastest?
A
sound would travel at the same speed for both
B
warm
C
cold
6) The speed of a sound wave in a gas depends on
A
D.) Both A and B
B
A.) temperature
C
C.) frequency
D
B.) mass of particles in gas
7) Which of the following cannot be measured by instruments-can vary from person to person depending on how they perceive sound?
A
Wavelength
B
Sound intensity
C
Loudness
8) How much more intense is a 60 dB sound than a 30 dB sound?
A
10 times
B
30 times
C
1000 times
D
100 times
9) How much more intense is a 80 dB sound than a 40 dB sound?
A
10, 000 times
B
1000 times
C
40 times
D
100 times
10) How far away in a jet plane if you notice a 2 second delay between seeing the plane and hearing it?
A
680 m
B
660 m
C
6800 m
D
340 m
*select an answer for all questions
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