1
Q
what is visible light used for
A
colour on cameras and human eyes can see it
2
Q
what is infrared used for
A
it is used for short range communication, computers in the same room ,tv remotes
checking heat signatures
3
Q
what are microwaves used for
A
communications and satellite transmissions, mobile phone signals, heating up food
4
Q
what are radio waves used for
A
transmitting radio broadcasts and TV programmes
5
Q
what are radio waves produces by
A
oscillations
6
Q
how are radio waves transmitted
A
the transmitting aerial produces oscillations which travel and meet the receiving aerial which receives the radio waaves
