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Y8- Sound

Last updated 3 months ago

12 questions

Note from the author:

Instructions

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Formative Generation Completed!

Formative Generation Completed!

Question 1

1.

Question 2

2.

Question 3

3.

Question 4

4.

Question 5

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Question 6

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Question 7

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Question 8

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Question 9

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Question 10

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Question 11

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Question 12

12.

What is the unit of frequency?

Decibel

Hertz

Ampere

Newton

Which property of sound describes its highness or lowness?

Pitch

Loudness

Amplitude

Frequency

The speed of sound is constant for all materials.

True

False

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

Which device is used to measure the intensity of sound?

Voltmeter

Decibel Meter

Oscilloscope

Amperemeter

Echoes are an example of:

Sound absorption

Sound refraction

Sound reflection

Sound diffraction

Loudness is the subjective perception of sound pressure.

True

False

When frequency increases, what happens to wavelength?

Increase

Decrease

Remains Constant

None of the above

What are the primary properties of a sound wave?

Amplitude

Frequency

Wavelength

Velocity

All of the above

In sound waves, air particles move in

Circular motion

Random motion

To and fro motion

Straight line motion

Which sounds have frequencies below human hearing?

Infrasound

Ultrasound

Megrasound

Picosound

What devices use ultrasound?

Scanners

Car sensors

Cleaning equipment

All of the above