Sound

Sound is made up of _________ that move through matter. 

• vibrations
• sounds
• energy
• volume

1.Sound is a form of energy made by ____________

• electricity

• vibration

• light

• volume

What is vibration?

• how loud a sound is
• the back and forth movement of matter
• how high or low a sound is
• the loudness or softness of a sound

How can you create a low pitch sound on a violin? 

• Pluck the thinnest string
• Pluck all the strings once together
• Pluck the thickest string
• Play the guitar

Sound is a form of? 

• energy
• pitch
• volume

An object that does not vibrate cannot produce

• sound
• light
• heat
• electricity

A longer string makes a _______ pitch than a short string.

• louder
• softer
• higher
• lower

Sound waves cannot travel in __________.

• air

• steel

• water

• a vacuum

What is the best explanation for why sound travels faster in air at 45 °C than at 0 °C?

• Warm air particles have less energy and vibrate more slowly.

• Warm air particles have more energy and can vibrate faster.

• Cold air particles have more energy and can vibrate faster.

• Cold air particles have more energy and vibrate more slowly

Why does sound travel slower through gases (air) than through liquids (water) or solids (gold and glass)?

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

• Gas particles have less energy than particles in liquids and solids.

• Particles in gases are further apart than particles in liquids and solids.

• Gas particles transfer energy better than particles in liquids and solids