Electromagnetic Spectrum

Front

What are electromagnetic waves?

Back

Electric & magnetic fields (energy) that travel through empty space very quickly.

Front

Which electromagnetic waves allow us to diagnose & treat cancer?

Back

Gamma rays.

Front

What waves have the lowest energy?

Back

Radio waves.

Front

What is the distance between two crests or two troughs of a wave called?

Back

Wavelength.

Front

What is an example of a wave with a long wavelength and low frequency?

Back

Radio waves.

Front

What is the speed of electromagnetic waves in a vacuum?

Back

Approximately 299,792 kilometers per second (the speed of light).

Front

What is frequency in relation to waves?

Back

The number of waves that pass a point in one second, measured in hertz (Hz).

Front

What is amplitude in a wave?

Back

The height of the wave from the rest position to the crest or trough.

Front

What type of electromagnetic waves are used in microwave ovens?

Back

Microwaves.

Front

What is the visible spectrum?

Back

The range of electromagnetic waves that can be seen by the human eye, typically from 400 to 700 nanometers.