Chapter 6 - Earth Science

What causes sound?

• Electricity

• Light

• Vibrations

• Heat

Why can't sound travel in space?

• There is no air

• It's too cold

• No vibration

• Space is a vacuum

Sound travels through air as a sound ____.

What does not allow sound to travel?

• liquid

• solid

• gas

• vacuum

The speed of sound in air is approximately ___ meters per second.

What determines the pitch of a sound?

• Loudness

• Medium

• Frequency of vibration

• Speed

A high-pitched sound has a high _________ of vibration.

Explain how plucking the strings produces sound.

Which of the following is an example of a medium through which sound can travel?

• Vacuum

• Oxygen

• Light

• Electricity

When particles in a medium vibrate, they create a _____ wave.