Sound, Wave, and Communication Unit Test

Front

What is the part of the ear that vibrates when sound waves reach it?

Back

Ear drum

Front

What is the term for how quiet or loud a sound is?

Back

Volume

Front

How do sound waves behave when a sound is made in a room?

Back

They spread outwards like ripples on a pond.

Front

What is the difference between sound waves and ripples on a pond?

Back

Sound waves travel through air, while ripples travel on water.

Front

What is the term for the highness or lowness of a sound?

Back

Pitch

Front

What is the term for the distance between two consecutive peaks of a wave?

Back

Wavelength

Front

What do we call the number of vibrations per second in a sound wave?

Back

Frequency

Front

What is the effect of increasing the volume of a sound?

Back

The sound becomes louder.

Front

What happens to sound waves when they hit a solid object?

Back

They can be reflected, absorbed, or transmitted.

Front

What is an example of a sound that has a high pitch?

Back

A whistle or a bird chirping.