Waves of Sound

What happens when sound waves reflect off a surface?

• They create a visual illusion

• They produce an echo

• They disappear completely

• They change into light waves

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NGSS.MS-PS4-2

What are vibrations that you can usually hear with your ears?

• Sound

• Code

• Pattern

• Transfer

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What is sound?

• A quick movement back and forth

• A pretend version of something

• Vibrations that you can usually hear with your ears

• A test used to discover new information

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Which part of the ear vibrates to help us hear sounds?

• Eardrum

• Experiment

• Model

• Vacuum

A sound wave that bounces back toward its source and is heard again is called

• a compression

• a wavelength

• timbre

• an echo

Tags

NGSS.MS-PS4-2

How does sound travel?

• Sounds travels in waves

• sound travels slow

• sound travels fast

• sound doesn't travel

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A type of wave that vibrates and sends waves of energy through a medium to our ears.

• electromagnetic

• light

• sound

• ocean

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NGSS.MS-PS4-1

How do sound waves travel from one place to another?

• Through a vacuum only

• Through solid, liquid, and gas

• Through light

• Through electricity

Tags

NGSS.MS-PS4-2

When an ambulance moves AWAY from you it sounds ________ pitched. 

• high

• low

• medium

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

When an ambulance moves TOWARDs you it sounds ________ pitched. 

• high

• low

• medium

Tags

NGSS.MS-PS4-1