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WorksheetsWeek 28 - Chapter 20 Sound
Total questions: 25
Worksheet time: 13mins
Name
Class
Date
1.
Sound travels in a _____.
a)
boat
b)
wave
c)
straight line
d)
particle
2.
A sonic boom happens when two planets collide.
a)
yes
b)
no
c)
unknown
3.
The cracking of a whip is actually the tip breaking the sound barrier.
a)
true
b)
false
4.
Sound waves travel faster in solids than in gases.
a)
True
b)
False
5.
What happens when something travels faster than the speed of sound?
a)
A sonic boom
b)
Nothing happens
c)
Nothing can travel faster than the speed of sound
6.
When wavelength is large...
a)
frequency is small.
b)
frequency is large.
c)
There is no relationship between wavelength and frequency.
7.
'Supersonic speed' is dependent on the medium in question.
a)
True
b)
False
8.
What is the unit for frequency?
a)
Hertz
b)
Maxwell
c)
Wave
d)
Amplitude
9.
A musician is playing a low-pitched recorder. Which of the following statements is true about his instrument?
a)
The instrument is likely small.
b)
The musician must blow harder to achieve sound.
c)
The instrument is pink.
d)
The instrument is likely large.
10.
Do sound waves oscillate parallel to or perpendicular to the direction in which the wave travels?
a)
Parallel
b)
Perpendicular
c)
The waves are random
11.
Which waves have the longest wavelength?
a)
Sonic waves
b)
Ultrasonic waves
c)
Infrasonic waves
d)
Wavelengths are all the same
12.
_____ is the highness or lowness of a sound.
a)
Pitch
b)
Sonic boom
c)
Amplitude
d)
Frequency
13.
The distance between crests is called the wavelength.
a)
True
b)
False
14.
Sound is a _______.
a)
longitudinal wave
b)
transverse wave
c)
Hertz wave
15.
Sound waves with low pitch have ___ frequency. Sound waves with high pitch have ___ frequency.
a)
high, low
b)
low, high
c)
high, high
d)
low, low
16.
Any speed that is faster than the speed of sound in the substance of interest is called ______.
a)
speed of light
b)
supersonic speed
c)
sonic boom
d)
transverse wave
17.
An indication of how high or low a sound is which is primarily determined by the frequency of the sound wave.
a)
volume
b)
pitch
c)
wavelength
d)
amplitude
18.
All sounds begin with vibrating matter.
a)
True
b)
False
19.
The distance between two crests is called the amplitude (A).
a)
True
b)
False
20.
The crest is the ___________ point in the wave.
a)
lowest
b)
highest
c)
middle
21.
We hear thunder after we see lightning because sound travels faster than light.
a)
True
b)
False
22.
The Doppler affect applies to ______.
a)
Only stationary objects that make sound.
b)
Only moving vehicles that create sound.
c)
Any moving object that creates sound.
d)
Any stationary object that emits light.
23.
Sounds over ____ decibels can cause damage to human ears.
a)
10
b)
130
c)
1030
d)
3000
24.
Bats and porpoises both use sonar.
a)
True
b)
False
25.
________ surfaces produce the best echoes.
a)
Soft
b)
Hard
c)
Round
d)
Rough
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