Unit 06: Sound Practice

Front

What happens when an object vibrates?

Back

It produces sound.

Front

What happens to the pitch of a sound when the vibration slows down?

Back

The pitch will get lower.

Front

What device uses sound waves to detect objects underwater?

Back

Sonar.

Front

What is an application of sound waves in medicine?

Back

Ultrasound scans.

Front

How does sound travel through air?

Back

By vibrating air molecules.

Front

What is sound?

Back

Sound is a type of energy made by vibrations.

Front

What is pitch?

Back

Pitch is how high or low a sound is.

Front

What is volume?

Back

Volume is how loud or soft a sound is.

Front

What is an echo?

Back

An echo is a sound that is reflected off a surface and heard again.

Front

What is frequency?

Back

Frequency is the number of vibrations per second, which determines the pitch.