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Comprehension Checkup
Comprehension Checkup

A Circle the best answer.

1. How do vibrations move?
a only once b very slowly c back and forth

2. Vibrations the eardrums in our ears.

a reach b pluck c recognize

3. What recognizes the sound?

a the string b the brain c the eardrum

4. We hear sounds like music and the same way.
a ears b voices c information

B Complete the sentence.

All sounds are , and our brain recognizes them.

Wrap Up
Wrap Up Number the sentences in order.

1 We pluck a guitar string.

The sound waves reach our ears.

The brain recognizes the sound.

A vibration occurs and it makes sound waves.

The sound waves send the information to the brain.

15

2020. 12. 22. 오후 2:14
미국교과서리딩_1권본문(6).indd 15
미국교과서리딩_1권본문(6).indd 15 2020. 12. 22. 오후 2:14