5.5 Sound

Front

What is sound?

Back

Sound is a type of energy made by vibrations that travels through air, water, or solids.

Front

How does sound travel through different materials?

Back

Sound travels fastest through solids, slower through liquids, and slowest through gases.

Front

What is the medium in which sound travels fastest?

Back

Sound travels fastest in solids because the particles are closer together.

Front

Why do we hear sound?

Back

We hear sound when sound waves vibrate our eardrums, which send signals to our brain.

Front

What is a sound wave?

Back

A sound wave is a wave of pressure that travels through a medium, caused by vibrating objects.

Front

What happens to sound in a vacuum?

Back

Sound cannot travel in a vacuum because there are no particles to transmit the sound waves.

Front

What is the role of the ear canal in hearing?

Back

The ear canal directs sound waves to the eardrum, where they cause vibrations.

Front

What is pitch?

Back

Pitch is how high or low a sound is, determined by the frequency of the sound wave.

Front

What is volume?

Back

Volume is the loudness or softness of a sound, determined by the amplitude of the sound wave.

Front

How does temperature affect the speed of sound?

Back

Sound travels faster in warmer temperatures because particles move more quickly.