How We Hear Sound. Lesson 9

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How We Hear Sound

Lesson 9

Before You Read

Look at the pictures. Who can’t

How We Hear Sound Lesson 9 Before You Read Look at the
hear sound? Why?

The man in picture ⓓ can’t hear sound because there is no air in space. Air is a medium that carries sound.

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How We Hear Sound

Lesson 9

Before You Read

Look at the pictures. Who can’t

How We Hear Sound Lesson 9 Before You Read Look at the
hear sound? Why?

The man in picture ⓓ can’t hear sound because there is no air in space. Air is a medium that carries sound.

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Key Words

Key Words

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shake

잘려진 음원 없음

shake 잘려진 음원 없음

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to connect something to something else

attach

?

to connect something to something else attach ?

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to move with very short, rapid motions

vibrate

?

to move with very short, rapid motions vibrate ?

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to quickly move something back and forth

shake

?

to quickly move something back and forth shake ?

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hard or solid

firm

?

hard or solid firm ?

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a substance through which something moves

medium

?

a substance through which something moves medium ?

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not containing anything

empty

?

not containing anything empty ?