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Y8- Sound
By Mr Pike
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Last updated about 11 hours ago
12 questions
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Formative Generation Completed!
Formative Generation Completed!
Question 1
1.
What is the unit of frequency?
Decibel
Hertz
Ampere
Newton
Question 2
2.
Which property of sound describes its highness or lowness?
Pitch
Loudness
Amplitude
Frequency
Question 3
3.
The speed of sound is constant for all materials.
True
False
Question 4
4.
What is the range of human hearing frequency?
20 Hz to 20000 Hz
100 Hz to 20000 Hz
20 Hz to 2000 Hz
10 Hz to 5000 Hz
Question 5
5.
Which device is used to measure the intensity of sound?
Voltmeter
Decibel Meter
Oscilloscope
Amperemeter
Question 6
6.
Echoes are an example of:
Sound absorption
Sound refraction
Sound reflection
Sound diffraction
Question 7
7.
Loudness is the subjective perception of sound pressure.
True
False
Question 8
8.
When frequency increases, what happens to wavelength?
Increase
Decrease
Remains Constant
None of the above
Question 9
9.
What are the primary properties of a sound wave?
Amplitude
Frequency
Question 10
10.
In sound waves, air particles move in
Circular motion
Random motion
To and fro motion
Straight line motion
Question 11
11.
Which sounds have frequencies below human hearing?
Infrasound
Ultrasound
Megrasound
Picosound
Question 12
12.
What devices use ultrasound?
Scanners
Car sensors
Cleaning equipment
All of the above
Wavelength
Velocity
All of the above