Sound and Light Waves

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 faster in solids than in liquids, and faster in liquids than in gases because molecules are closer together in solids.

Front

What is a wave?

Back

A wave is a disturbance that transfers energy from one place to another without transferring matter.

Front

What is reflection in terms of waves?

Back

Reflection is the bouncing back of a wave when it hits a surface that it cannot pass through.

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one material to another.

Front

What is amplitude?

Back

Amplitude is the distance from the line of origin to the top (crest) or bottom (trough) of a wave.

Front

What is a crest?

Back

A crest is the highest point of a wave.

Front

What is a trough?

Back

A trough is the lowest point of a wave.

Front

What is wavelength?

Back

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

Front

What is frequency?

Back

Frequency is the number of waves that pass a point in one second, measured in Hertz (Hz).