Microwaves

Microwaves are used for mobile phone and other satellite communication because they are not reflected by the

Microwaves are used for mobile phone and other satellite communication because they are not reflected by the

Aerials work by..

• absorbing electromagnetic waves, which makes electrons move up and down with the same frequency as the wave

• absorbing electromagnetic waves, which sends a direct current through the aerial

• absorbing sound waves which can be made into electrical signals

• absorbing electromagnetic waves, which emits a sound with the same frequency as the wave

Microwaves are used for communications because..

• they can be reflected all around the world

• they are really good at communicating very short distances

• they can travel through many different types of solid

• they can travel through all solids and liquids

Mobile phone networks are divided into smaller areas called

• chambers

• counties

• hectares

• cells

Mobile phones use microwaves that are about

• 30 micrometres long

• 30 mm long

• 30cm long

• 30m long

Microwaves are longer than radio waves

• True

• False

Microwaves have a higher frequency than visible waves

• True

• False