Science Unit 7

the example of sound energy is, except ....

• thunder

• a car horn

• a firefly

• a guitar string

the example of sources of light is ....

• thunder

• campfire

• duck

• a guitar string

distance between similar points on two to each other is called ....

• pitch

• wavelength

• volume

• frequency

if you change the frequency or wavelength of a sound wave, you change its ...

• pitch

• wavelength

• volume

• frequency

number of waves that pass a point in a certain amount of time is called ....

• pitch

• wavelength

• volume

• frequency

if you change the amplitude or height of a sound wave, you change its ...

• pitch

• wavelength

• volume

• frequency

sound is a type of energy made by ....

• vibrations

• matter

• eardrums

• sound waves

vibrations create sound waves that move through ....

• vibrations

• matter

• eardrums

• sound waves

____ move faster through mos liquids and solids

• vibrations

• matter

• eardrums

• sound waves

we hear sound when sound waves make our ___ vibrate

• vibrations

• matter

• eardrums

• sound waves