8th Grade: Week 18/19: Sound and Light Review

Front

Sound travels FASTEST through which of these materials?

Back

Metal

Front

Sound is caused by?

Back

vibrations

Front

What is frequency?

Back

the number of vibrations per second

Front

What is vibration?

Back

the back and forth movement of matter

Front

What causes an echo?

Back

sound waves bouncing off large, hard surfaces

Front

Without matter, sound waves could not travel. True or False?

Back

True

Front

People cannot hear sounds with a frequency less than ______ Hz.

Back

20

Front

_____ is a method of locating things underwater using echolocation.

Back

sonar

Front

Bats use ________ TO LOCATE MOSQUITOES IN THE AIR.

Back

echolocation

Front

The amount of energy a wave carries corresponds with its ____.

Back

amplitude