Sound

What is true about sound?

• Some sounds are made when matter moves and some when matter rests.

• Some sounds are so loud you can't hear them.

• All sounds are loud.

• All sounds are made when matter moves.

Matter moving back and forth quickly is called?

• a soft sound

• a loud sound

• vibration

• pitch

How do wind instruments make sound?

• air inside them vibrate

• reeds inside them vibrates

• you hit the instrument

• pushing buttons on the instrument

Which part of the ear has a shell-shaped part filled with liquid?

• eardrum

• inner ear

• outer ear

• little bones

Why does sound travel slowly through gases?

• The particles in gases are farther apart than the particles in liquids and solids.

• The particles in gases are closer together than the particles in liquids and solids.

• The particles in gases are smaller than the particles in liquids and solids.

• The particles in gases are larger than the particles in liquids and solids.

The same sound travels through air, water, milk, and steel. Which matter will the sound travel most quickly?

• water

• milk

• steel

• air

The same sound travels through air, milk, water, and steel. Through which matter will the sound travel most quickly?

• Air

• Milk

• Water

• Steel

How is the length of a sound wave measured?

• from the beginning of the wave to the end of the wave

• from the center of one compression to the center of the next compression

• from the beginning of the wave to half way through the wave

• from the end of one compression to the beginning of the next compression

An object that vibrates slower has a ___________ pitch

• lower

• higher

• faster

• baseball

The outer ear collects sound waves.

• True

• False