Front

To take in

Back

absorb

Front

The maximum height of a wave

Back

amplitude

Front

To give off

Back

emit

Front

The ability to make things move or change

Back

energy

Front

The number of peaks of a wave that pass in a second

Back

frequency

Front

A type of wave that carries energy from one place to another, even through empty space.

Back

light

Front

Anything that has mass and takes up space.

Back

matter

Front

A group of atoms joined together in a particular way

Back

molecule

Front

To bounce off without absorbing

Back

reflect

Front

A range of wavelengths

Back

spectrum