Science Chapter 7 Sound

engineer

A sound ______________ mixes sound from different instruments for musicians.

ultra-sound

A(n) _________ machine turns echoes into pictures.

waves

An oscilloscope show sound _______.

transmitter

Radio sound is heard through the use of a(n) _________.

effects

Sound _________ are imitations of sounds from other things.

timed

Sound can be ______ to see which direction it came from

air

Sound is vibrations of _______ waves.

faster

Sound travels _______ through a solid than through air.

molecules

Sound travels in waves through air ___________.

smaller

Sound waves get ________ when they enter your ear.

sound

The eardrum vibrates when it hears a/an _______.

resonance

When an object vibrates at natural frequency it is called ___________.

echo

When sound waves are reflected it is called a(n) ________.

vocal

Your ______ chord vibrates to enable you to talk.

frequency

___________ is how fast or slow a sound wave is moving.