Lesson 1: The Nature of Sound

What produces sound?

• frequencies

• pitch

• vibrations

• reverberations

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What type of waves are sound waves?

• Transverse

• Longitudinal

• Electromagnetic

• Radio

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What are the two types of regions that make

up longitudinal waves?

• Compressions and rarefactions

• Compressions and extensions

• Vibrations and transmissions

• Compressions and transmissions

Sound waves cannot travel through

• solids

• liquids

• gases

• vacuum

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The matter through which a sound wave

travels is always called

• medium

• solid

• liquid

• gas

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The figure below shows the air particles as the

sound wave passes through it.

• Compressions: A & C
  Rarefactions: B & D

• Compressions: B & D
  Rarefactions: A & C

• Compressions: A & B
  Rarefactions: C & D

• Compressions: C & D
  Rarefactions: A & B

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NGSS.MS-PS4-1

Draw a Longitudinal vs a Transverse Wave
(Label compression and rarefaction if present)

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How do air molecules enable sound to travel from a radio’s speaker to your ears?

Describe a compression and a rarefaction of a sound wave traveling through air.