Waves of Sound Unit Quiz

When you feel your throat making high and low pitched noises, you notice....

• Your throat starts to vibrate

• Your throat feels like a wave of movement

Why does sound travel through a string?

• An electric current causes your voice to travel

• Vibrations from your voice travel through the string.

What happens to sound underwater?

• You can't hear it because sound can't travel through water

• You can hear it because the vibrations travel easily through water.

How do our ears hear?

• The sound causes your eardrum to vibrate and then you hear a sound

• The eardrum keeps vibrations from entering your ear

What is the difference between pitch and volume?

• Pitch is how high or low a sound is, sound is how loud or quiet a sound is.

• Pitch is how loud or quiet a sound is, sound is how high or low a sound is.

Lower pitched sounds...

• vibrate faster than higher pitched sounds

• vibrate slower than higher pitched sounds

A machine that shows waves on a graph is called...

• oscilloscope

• vacuum pump

The thin piece of material inside of your ear is called...

• ear tube

• eardrum

When sound bounces of a surface it is called an

• echo

• bounce back

A device used to remove air from a container is called...

• oscilloscope

• vacuum pump