Front

What is sound?

Back

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

Front

What are sound waves?

Back

Sound waves are vibrations that travel through a medium (like air or water) and can be heard when they reach a person's or animal's ear.

Front

What is amplitude in a sound wave?

Back

Amplitude is the height of the sound wave, which determines how loud the sound is.

Front

What is wavelength in a sound wave?

Back

Wavelength is the distance between two consecutive peaks or troughs in a sound wave.

Front

What is compression in sound waves?

Back

Compression is the part of a sound wave where the molecules are pressed together.

Front

What is rarefaction in sound waves?

Back

Rarefaction is the part of a sound wave where the molecules are spread apart.

Front

How do whales use sound?

Back

Whales use sound to communicate, navigate, and locate food in the ocean.

Front

What type of sound do birds make?

Back

Birds typically make high-pitched sounds.

Front

What is the speed of sound in air?

Back

The speed of sound in air is approximately 343 meters per second (1,125 feet per second) at room temperature.

Front

What is an echo?

Back

An echo is a reflection of sound that arrives at the listener after a delay.