Middle School: 6th, 7th and 8th Grade - Science - Sound 2 Solution - MCQGeeks.com

Q.1.

Sounds which have a very high frequency are called .......

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Decibles
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Infra sound
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Resonance
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Ultra sound

Q.2.

Frequency is measured in .......

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Hertz
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Metres
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Ohms
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Volts

Q.3.

How does decreasing the length of a guitar string change its vibration?

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Changes the amplitude
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Decreases frequency
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Decreases pitch
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Increases frequency

Q.4.

A high frequency of vibrations produces .......

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High pitched sounds
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Loud sounds
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Low pitched sounds
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Quiet sounds

Q.5.

Older people can't hear .......

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Any better or worse than younger people
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High pitched sounds as well as younger people
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Low frequency sounds as well as younger people
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Low pitched sounds as well as younger people

Q.6.

A loudspeaker changes .......

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Electrical energy to sound energy
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Potential energy to sound energy
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Sound energy to electrical energy
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Sound energy to potential energy

Q.7.

How will a thin string on a violin vibrate compared to a thick string?

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It will vibrate with a greater amplitude
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It will vibrate with a greater frequency
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It will vibrate with a smaller amplitude
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It will vibrate with a smaller frequency

Q.8.

A large amplitude of vibration produces .......

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High pitched sound
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Loud sounds
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Low pitched sounds
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Quiet sounds

Q.9.

How will tightening a guitar string change its vibration?

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It will vibrate with a greater amplitude
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It will vibrate with a greater frequency
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It will vibrate with a smaller amplitude
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It will vibrate with a smaller frequency

Q.10.

Sounds cannot travel through .......

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A gas
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A liquid
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A solid
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A vacuum