The Nature of Sound

Page 36

Sound Waves

Sound is a disturbance that travels through medium

Longitudinal Wave

All sound waves begin as a vibration

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Reflection

Echo

The harder and flatter surfaces reflect the best

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Diffraction

Same as typical waves

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Speed

Density

Speed is slower in more dense materials

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Elasticity

How much the media can move and come back

Solids – Fast

Liquid - Middle

Gas – Slow

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Temperature

Slower at colder temperatures

Charles Yeager

Temperature

Speed -10°C

Speed at 30°C

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