Sound basics 2023

what is energy

• ability to cause change

• measure of how strong you are

• ability to measure speed

• ability to think and answer questions

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Sound is

• A disturbance that moves through a medium

• A pressure wave that produces sensations in the ear

• both answers are correct

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Sound is a type of

• light.

• voltage.

• wave.

• matter.

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In which medium will sound travel the fastest?

• Air

• Water

• Steel

• Vacuum

Sound is caused by

• force

• instruments

• vibrations

• installations

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What is vibration?

• how loud a sound is

• the back and forth movement of matter

• how high or low a sound is

• the loudness or softness of a sound

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Why can't we hear sound in space?

• We wouldn't be able to take off our helmet to hear.

• Space has no mass--no gas/ no solids/ no liquids.

• It is dark in space.

• None of these.

What is frequency?

• the number of vibrations per second
• how high or low a sound is
• the loudness or softness of a sound
• the back and forth movement of matter

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Measure of sound frequency is called

• amplitude
• compression
• volume

• pitch

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distance between compressions (similar points)

• wave speed

• wavelength

• wave