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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.
Which statement is NOT correct?
Sound is a longitudinal wave.
Sound needs a medium to travel.
A microphone changes sound into an electrical signal.
Microphones change sound to light.
2.
Which statement is NOT correct?
Air molecules move backwards and forwards.
Sound gets quieter further away because energy spreads out.
Amplitude changes pitch.
Amplitude is the height from the centre line to a peak.
3.
Trace height for voices. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 1
A
B
C
D
4.
Amplitude ∝ 1/distance. 100 units at 1 m; at 5 m?
20 units
100 units
500 units
50 units
5.
Amplitude at distances from a speaker. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 2
A
B
C
D
6.
Amplitude of trace against drum hit strength. Between which two values of "Hit strength (units)" did "Amplitude (cm)" change the most?
Dr Dabour Hub Academy - figure 3
2 and 3
4 and 5
3 and 4
1 and 2
7.
Amplitude at distances from a speaker. By how much does "Amplitude (units)" change between 1 and 5?
Dr Dabour Hub Academy - figure 4
20
80
120
100
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.
A microphone changes sound into an ____ signal.
light
electrical
heat
chemical
10.
Which term matches this definition? “Line shown on an oscilloscope.”
Variable resistor
Trace
Electricity meter
Intensity
11.
Trace height for voices. About how many times bigger is Shout than Whisper?
Dr Dabour Hub Academy - figure 5
19.0
6.3
12.7
25.3
12.
Which statement is correct?
Louder sounds have smaller amplitude.
Hitting harder gives a quieter sound.
A sound wave is a pressure wave.
Amplitude changes pitch.
13.
A trace has peak-to-trough height 4.4 cm. Amplitude?
4.4 cm
1.1 cm
2.2 cm
8.8 cm
14.
True or false? A sound wave is a pressure wave.
True
False
15.
Which is the correct definition of “Oscilloscope”?
Resistances add up.
Resistance equation.
Shows a sound as a wave trace.
Unbroken loop for current.
16.
Which term matches this definition? “Back-and-forth movement.”
Current
Compression
Vibration
Nichrome
17.
Shouting gives a trace with ____ waves.
flat
shorter
taller
no
18.
Sound levels of sources (dB). Which has the smallest value?
Dr Dabour Hub Academy - figure 6
Talking
Traffic
Whisper
Concert
19.
A louder sound has a ____ amplitude.
smaller
zero
equal
larger
20.
Which term matches this definition? “Depends on amplitude.”
Time period
P = V × I
Ear defenders
Loudness
21.
Which statement is correct?
Sound is a longitudinal wave.
Microphones change sound to light.
Sound energy increases with distance.
Sound is a transverse wave.
22.
Trace height for voices. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 7
A
B
C
D
23.
Amplitude at distances from a speaker. Between which two values of "Distance (m)" did "Amplitude (units)" change the most?
Dr Dabour Hub Academy - figure 8
4 and 5
1 and 2
3 and 4
2 and 3
24.
True or false? Sound energy increases with distance.
True
False
25.
Amplitude ∝ hit strength. 1.0 cm at strength 2; at strength 4?
5.0 cm
1.0 cm
0.5 cm
2.0 cm
26.
Sound gets quieter further away because energy ____.
disappears
spreads out
reverses
doubles
27.
A trace has peak-to-trough height 3 cm. Amplitude?
0.8 cm
1.5 cm
3.0 cm
6.0 cm
28.
The distance from one compression to the next is the ____.
frequency
amplitude
period
wavelength
29.
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.
30.
Which statement is correct?
Sound travels through a vacuum.
Microphones change sound to light.
Shouting gives a trace with taller waves.
Hitting harder gives a quieter sound.
31.
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
32.
Which is the correct definition of “Loudness”?
Place of destructive interference.
Depends on amplitude.
Back-and-forth movement.
Power shown on an appliance label.
33.
Amplitude of trace against drum hit strength. Calculate the percentage change in "Amplitude (cm)" from 1 to 5.
Dr Dabour Hub Academy - figure 9
500%
400%
80%
−400%
34.
True or false? An oscilloscope shows sound as a trace.
True
False
35.
Trace height for voices. What is the total of all the values?
Dr Dabour Hub Academy - figure 10
4.1
3.8
7.3
5.7
36.
True or false? Sound is a longitudinal wave.
True
False
37.
True or false? Hitting harder gives a quieter sound.
True
False
38.
Shout trace 3.5 cm vs whisper 0.3 cm. How many times bigger?
0.1 times
3.2 times
11.7 times
3.8 times
39.
Which term matches this definition? “Sound: regions of higher and lower pressure.”
Pressure wave
Loudness
Noise-induced hearing loss
Resistor
40.
True or false? Amplitude changes pitch.
True
False
41.
Amplitude ∝ hit strength. 1.0 cm at strength 2; at strength 5?
0.4 cm
6.0 cm
2.5 cm
1.0 cm
42.
True or false? Amplitude is peak to peak distance along the wave.
True
False
43.
Shout trace 4 cm vs whisper 0.3 cm. How many times bigger?
0.1 times
4.3 times
13.3 times
3.7 times
44.
Trace height for voices. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 11
A
B
C
D
45.
Amplitude ∝ 1/distance. 100 units at 2 m; at 4 m?
100 units
500 units
50 units
200 units
46.
Amplitude of trace against drum hit strength. Which statement best describes the pattern?
Dr Dabour Hub Academy - figure 12
"Amplitude (cm)" decreases as "Hit strength (units)" increases
"Amplitude (cm)" increases as "Hit strength (units)" increases
"Amplitude (cm)" rises to a peak at 5, then falls
"Amplitude (cm)" stays the same
47.
Amplitude ∝ 1/distance. 100 units at 1 m; at 4 m?
100 units
25 units
50 units
400 units
48.
Sound levels of sources (dB). What is the total of all the values?
Dr Dabour Hub Academy - figure 13
463
420
140
377
49.
True or false? Sound travels through a vacuum.
True
False
50.
Trace height for voices. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 14
A
B
C
D
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Part of Chapter 13: Sound Waves — see every lesson and quiz in this unit.
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