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Course: Alhussan Physics — Stage 9
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Alhussan Physics — Stage 9

Chapter 11: Forces and Density

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Chapter 12: Energy Transfer

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Chapter 13: Sound Waves

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Chapter 14: Electrical Circuits, Resistance and Power

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Chapter 15: The Earth in Space (Universe and Stars)

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Quiz

Physics 13.1 Loudness and amplitude — Quiz

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  • Questions count: 50
  • Passing grade: B+
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1.
A louder sound has a ____ amplitude.
smaller
zero
equal
larger
2.
Why does sound get quieter further from the source?
The energy spreads over a larger area
Sound speeds up
Air absorbs pitch
The frequency falls
3.
Sound has regions of higher and ____ pressure.
equal
infinite
lower
zero
4.
True or false? Sound is made by a vibrating object.
True
False
5.
Amplitude ∝ hit strength. 1.0 cm at strength 1; at strength 4?
1.0 cm
4.0 cm
5.0 cm
0.2 cm
6.
True or false? Hitting harder gives a quieter sound.
True
False
7.
True or false? Particles vibrate across the wave direction.
True
False
8.
Which statement is NOT correct?
Amplitude is the height from the centre line to a peak.
A louder sound has a larger amplitude.
Sound is a transverse wave.
Larger vibrations carry more energy.
9.
Sound levels of sources (dB). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 1
A
B
C
D
10.
Amplitude ∝ 1/distance. 100 units at 1 m; at 5 m?
20 units
100 units
500 units
50 units
11.
True or false? Amplitude changes pitch.
True
False
12.
A trace has peak-to-trough height 6 cm. Amplitude?
3.0 cm
1.5 cm
6.0 cm
12.0 cm
13.
Trace height for voices. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 2
A
B
C
D
14.
Trace height for voices. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 3
A
B
C
D
15.
True or false? Rarefactions are high-pressure regions.
True
False
16.
Air molecules move ____.
backwards and forwards
in circles
not at all
upward only
17.
Which statement is NOT correct?
An oscilloscope trace is a transverse picture of a sound wave.
Sound energy increases with distance.
Hitting a drum harder gives a louder sound.
A microphone changes sound into an electrical signal.
18.
Which statement is correct?
Sound is a transverse wave.
Amplitude is the height from the centre line to a peak.
Louder sounds have smaller amplitude.
Microphones change sound to light.
19.
Which is the correct definition of “Amplitude”?
Model of what voltage does.
Resistances add up.
Uses a variable resistor.
Height from the centre line to a peak.
20.
Which is the correct definition of “Rarefaction”?
Unbroken loop for current.
Lower pressure region.
Higher pressure region.
Gap stopping current.
21.
Amplitude at distances from a speaker. At what value of "Distance (m)" is "Amplitude (units)" greatest?
Dr Dabour Hub Academy - figure 4
1
5
4
2
22.
Amplitude ∝ 1/distance. 100 units at 2 m; at 5 m?
250 units
50 units
40 units
100 units
23.
Trace height for voices. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 5
A
B
C
D
24.
Amplitude of trace against drum hit strength. At what value of "Hit strength (units)" is "Amplitude (cm)" greatest?
Dr Dabour Hub Academy - figure 6
5
4
3
2
25.
Amplitude ∝ hit strength. 0.5 cm at strength 2; at strength 3?
0.8 cm
0.5 cm
3.5 cm
0.3 cm
26.
Trace height for voices. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 7
A
B
C
D
27.
True or false? An oscilloscope shows sound as a trace.
True
False
28.
Trace height for voices. What is the total of all the values?
Dr Dabour Hub Academy - figure 8
4.1
3.8
7.3
5.7
29.
Which statement is correct?
Amplitude changes pitch.
Sound travels through a vacuum.
Particles vibrate across the wave direction.
Air molecules move backwards and forwards.
30.
Shout trace 4 cm vs whisper 0.5 cm. How many times bigger?
3.5 times
8.0 times
4.5 times
0.1 times
31.
Trace height for voices. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 9
A
B
C
D
32.
Larger vibrations carry ____ energy.
equal
more
less
no
33.
What does the loudness of a sound depend on?
Amplitude
Frequency
Wavelength
Speed
34.
True or false? Microphones change sound to light.
True
False
35.
Which statement is NOT correct?
Hitting a drum harder gives a louder sound.
Sound has regions of higher and lower pressure.
A quieter sound has a smaller amplitude.
Rarefactions are high-pressure regions.
36.
Sound levels of sources (dB). Which has the greatest value?
Dr Dabour Hub Academy - figure 10
Traffic
Whisper
Talking
Jet engine
37.
Which term matches this definition? “Higher pressure region.”
Kilohertz
Push
Vibration
Compression
38.
Trace height for voices. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 11
A
B
C
D
39.
True or false? Amplitude is the height from the centre line to a peak.
True
False
40.
Which is the correct definition of “Microphone”?
Turns sound into an electrical signal.
Adding wave displacements.
Below 20 Hz.
Model of what voltage does.
41.
Trace height for voices. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 12
A
B
C
D
42.
Amplitude ∝ hit strength. 0.5 cm at strength 1; at strength 5?
0.1 cm
5.5 cm
2.5 cm
0.5 cm
43.
Amplitude at distances from a speaker. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 13
A
B
C
D
44.
Sound needs a ____ to travel.
vacuum
magnet
medium
light
45.
True or false? A microphone changes sound into an electrical signal.
True
False
46.
Which term matches this definition? “Shows a sound as a wave trace.”
Resistor
Cross-sectional area
Destructive interference
Oscilloscope
47.
An oscilloscope trace is a ____ picture of a sound wave.
circular
square
transverse
longitudinal
48.
Amplitude of trace against drum hit strength. At what value of "Hit strength (units)" is "Amplitude (cm)" smallest?
Dr Dabour Hub Academy - figure 14
5
1
2
3
49.
Which statement is correct?
Microphones change sound to light.
An oscilloscope shows sound as a trace.
Amplitude is peak to peak distance along the wave.
Sound travels through a vacuum.
50.
True or false? Sound is a longitudinal wave.
True
False
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Part of Chapter 13: Sound Waves — see every lesson and quiz in this unit.
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