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HIA International — Grade 8

Unit 1: Photosynthesis and the carbon cycle

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Unit 2: Properties of materials

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Unit 3: Forces and energy

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Unit 4: Maintaining life

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Unit 5: Reactivity

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Unit 6: Sound and space

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Unit 7: Genes and inheritance

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Unit 8: Rates of reaction

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Unit 9: Electricity

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Quiz

Loudness And Pitch Of Sound – Quiz

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Loudness And Pitch Of Sound HIA Science quiz: free practice for HIA International. Work through this Loudness And Pitch Of Sound HIA Science quiz and get instant feedback on every answer. If you get stuck, review the 24.6 Loudness And Pitch Of Sound – Notes lesson. More practice: HIA International — all units. Syllabus: Cambridge Lower Secondary programme.

  • Questions count: 50
  • Passing grade: A-
  • Time limit:
Start Quiz
1.
What decides how loud a sound is?
Its amplitude
Its colour
Its frequency
Its speed
2.
What is the unit of frequency?
The metre
The joule
The decibel
The hertz
3.
How do you make a guitar string give a higher note?
Make it longer
Make it shorter or tighter
Pluck it harder
Loosen it
4.
What is frequency?
The size of a vibration
The number of vibrations each second
The speed of sound
The loudness of a sound
5.
What is pitch?
The shape of the ear
How loud a note is
How high or low a note sounds
How fast sound travels
6.
What is an oscilloscope used for?
Making sounds louder
Showing the shape of a sound wave on a screen
Measuring temperature
Measuring mass
7.
Why can sound not travel through a vacuum?
Sound needs particles to vibrate
A vacuum is too cold
Sound is absorbed by glass
Sound is too slow
8.
What is the approximate range of human hearing?
2 Hz to 200 Hz
20 Hz to 20 000 Hz
200 Hz to 2 000 000 Hz
0 Hz to 100 Hz
9.
What is ultrasound?
Very loud sound
Sound above 20 000 Hz
Sound below 20 Hz
Sound in a vacuum
10.
A string vibrates 440 times each second. What is its frequency?
440 dB
440 Hz
44 Hz
4400 Hz
11.
What happens to the trace on an oscilloscope when a drum is hit harder?
The waves become taller
The trace disappears
The waves get further apart
The waves get closer together
12.
Which string on a guitar gives the lowest note?
A thin, short, tight string
A thick, long, loose string
All strings give the same note
A thin, loose string only
13.
Which trace in the diagram shows the loudest, highest-pitched sound?
Dr Dabour Hub Academy - figure 1
C
D
A
B
14.
Which two traces in the diagram have the same pitch but different loudness?
Dr Dabour Hub Academy - figure 2
C and B
A and C
B and C
A and B
15.
Which trace shows the quietest, lowest-pitched sound?
Dr Dabour Hub Academy - figure 3
D
C
A
B
16.
Trace C shows 5 waves and trace A shows 2 waves in the same time. How many times higher is the frequency of C?
Dr Dabour Hub Academy - figure 4
2 times
2.5 times
5 times
10 times
17.
Using the graph, what is the frequency when the string is 30 cm long?
Dr Dabour Hub Academy - figure 5
600 Hz
400 Hz
300 Hz
240 Hz
18.
What pattern does the graph of frequency against string length show?
Dr Dabour Hub Academy - figure 6
Frequency is 0 at 40 cm
Length has no effect
Longer strings give higher frequencies
Shorter strings give higher frequencies
19.
Using the graph, what happens to the frequency when the string length is doubled from 30 cm to 60 cm?
Dr Dabour Hub Academy - figure 7
It doubles
It quadruples
It stays the same
It halves
20.
Using the chart, which animal can hear ultrasound but a human cannot?
Dr Dabour Hub Academy - figure 8
Dog
Elephant
Human
None of them
21.
Using the chart, which animal can hear the lowest frequencies?
Dr Dabour Hub Academy - figure 9
Dog
Elephant
Bat
Human
22.
As air is pumped out of the jar in the diagram, what happens to the sound of the bell?
Dr Dabour Hub Academy - figure 10
It gets quieter until it can hardly be heard
Nothing changes
The pitch rises sharply
It gets louder
23.
In the bell jar experiment, the bell can still be seen vibrating. What does this show?
Dr Dabour Hub Academy - figure 11
Sound travels faster than light
The jar is not sealed
Light can travel through a vacuum but sound cannot
The bell has stopped
24.
Using the bar chart, how much louder is a rock concert than talking?
Dr Dabour Hub Academy - figure 12
60 dB
30 dB
50 dB
110 dB
25.
Using the graph, what happens to frequency as the tension increases?
Dr Dabour Hub Academy - figure 13
It falls to zero
It decreases
It increases
It stays the same
26.
What is the third step in the flow chart?
Dr Dabour Hub Academy - figure 14
An object vibrates
The brain interprets the sound
The eardrum vibrates
Compressions travel through the air
27.
How many times does the tuning fork shown vibrate in 2 seconds?
Dr Dabour Hub Academy - figure 15
256
512
128
1024
28.
Use the table. Which sound is highest in pitch?
Sound S
Sound Q
Sound P
Sound R
29.
Use the table. Which sound is loudest?
Sound R
Sound P
Sound Q
Sound S
30.
Use the table. Which sound could a human NOT hear?
Sound X
Sound W
Sound Z
Sound Y
31.
Use the table. What is the missing frequency for the 40 cm string?
300 Hz
350 Hz
400 Hz
200 Hz
32.
Use the table. Which reading is anomalous?
The 60 cm reading
The 30 cm reading
The 20 cm reading
The 50 cm reading
33.
Use the table. How can you increase loudness?
Use a special generator
Shorten the string
Hit harder
Lengthen the string
34.
A student's notes have one mistake. Which row?
Frequency - decides loudness
Frequency - measured in hertz
Pitch - decided by frequency
Amplitude - decides loudness
35.
Use the table. What is the frequency of a string that vibrates 1500 times in 5 seconds?
1500 Hz
30 Hz
7500 Hz
300 Hz
36.
When investigating how string length affects pitch, which variables must be controlled?
The loudness heard
The tension, thickness and material of the string
The length of the string
The frequency measured
37.
Why is a frequency meter or app better than judging pitch by ear?
It is always slower
It changes the frequency
It makes the sound louder
It gives a precise number and removes opinion
38.
A student wants to find how the thickness of a rubber band affects its pitch. Which plan is best?
Measure loudness instead of frequency
Stretch bands of different thickness to the same length and tension, pluck each and measure the frequency
Use bands of different lengths and tensions
Pluck one band only
39.
Which pairing of property and what decides it is correct?
Loudness - frequency
Pitch - amplitude
Pitch - frequency
Loudness - speed
40.
Match the term to its description: Sound wave
The unit of frequency
An instrument showing waves
A vibration that travels through a material as compressions
The size of a vibration
41.
The unit of frequency, one vibration per second, is the _____.
decibel
hertz
joule
newton
42.
The size of a vibration, which decides loudness, is the _____.
pitch
amplitude
frequency
wavelength
43.
A note of 500 Hz has _____ vibrations every second.
50
500
5000
5
44.
Amplitude controls loudness and frequency controls pitch. True or false?
True, but only for drums
True
False
False, amplitude controls pitch
45.
Sound can travel through a vacuum. True or false?
True, like light
True
False, but only in space
False
46.
A shorter string gives a lower pitch. True or false?
False, length has no effect
True, always
False
True
47.
A sound of 30 000 Hz is ultrasound. True or false?
False, it is infrasound
True
False, it is audible to all humans
False
48.
Plucking a string harder raises its pitch. True or false?
True
False
True, harder means higher
False, it lowers the pitch
49.
On an oscilloscope, waves closer together show a higher pitch. True or false?
True
False, they show a louder sound
False
False, they show a quieter sound
50.
A sound of 100 dB is louder than one of 40 dB. True or false?
False, it is quieter
True
False
False, decibels measure pitch
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Part of Unit 6: Sound and space — see every lesson and quiz in this unit.
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