Gamma Rays		High frequency	Short wavelength 0.01 nm
X-Rays			1 nm
Ultra-Violet			100 nm
Visible light			400-700 nm
Infra-Red			0.01 mm
Microwaves			1 cm
Radio waves		Low frequency	1 m - 1km Long wavelength

All of these are "electromagnetic waves". This means that although they appear to be very different, in fact they're all made of the same kind of vibrations - but at different frequencies.

You need to remember

the names of the waves,

the order they fit into the electromagnetic spectrum

which ones have the highest or lowest frequencies

they all travel at the speed of light (300 million m/s)

they can all travel across a vacuum

What does "frequency" mean?

The frequency of a wave is the number of waves per second.

What does "wavelength" mean?

The wavelength is the distance from the peak of one wave to the next one.