water waves
echolocation
100

what are waves made of (VERY HARD)

water

100

name a animal that uses ecoloactoin

whale

200

what is a wave period

the time for the wave to reach point A to point B

200

is air a type or matter 

A) Yes

B) No

Yes

300

what do waves move through 

A) lava

B) particles

C) light

D) lava

B particles

400

What happens when water rubs agaist air

it creates friction

500

what are all the parts of a wave

crest and tough

M
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