How Sounds are Made

In general, sound waves travel the slowest in __________

• solids

• liquids

• gases

• a vacuum

In general, sound waves travel the fastest in __________

• solids

• liquids

• gases

• a vacuum

A rarefaction is generated when particles move

• closer together

• at the same time

• further apart

• faster

Which of the following does NOT make a sound?

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• 
• 
• 

Sound cannot travel through ___________.

• a vacuum

• solids

• liquids

• gases

A compression is generated when particles move

• closer together

• at the same time

• further apart

• faster

Sounds are made by ____________.

• vibrations

• stationary objects

• thermal energy

• photosynthesis

Which of the following can detect sound?

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• 
• 
• 

What type of wave is a sound wave?

• Longitudinal wave

• Transverse wave

• Rayleigh wave

• Surface wave