10.3

Sound is produced by the__________of objects. (abc)

The number of vibrations per second made by a vibrating object is called_________.

• decibel

• frequency

• hertz

• medium

Unit of frequency is_____(__). (abc/Abc)

The higher the sound frequency, the______the pitch.

• slower

• lower

• higher

• faster

The longer the tuning fork, the_____frequency produces.(abc)

When an object ________ in the air, it pushes on the surrounding ___ _________ and causes them to vibrate. (abc/abc)

what medium(/media) can sound travel through?

• solid

• gas

• vacuum

• liquid

what is (11)? (Abc)

what is (12)? (Abc)

what is (13)? (Abc)