electromagnetic spectrum 📻

Question 1

properties of electromagnetic waves

Answer 1

1) they travel at a speed of 3.0 x 10⁸ m/s in a vacuum
2) can travel through vacuum
3) do not carry charge
4) obey the laws of reflection

Question 2

what is the order of the electromagnetic spectrum?

Answer 2

radio waves! microwaves! infrared radiation! visible light! ultraviolet! x-rays! gamma rays!

Question 3

what are the uses of radio waves?

Answer 3

radio communications

Question 4

what are the uses of microwaves?

Answer 4

microwaves, satellite

Question 5

what are the uses of infrared radiation?

Answer 5

remote control, intruder alarm

Question 6

what are the uses of visible light?

Answer 6

optical fibres

…. to see???

Question 7

what are the uses of ultraviolet?

Answer 7

sterilising medical equipment, sunbed

Question 8

what are the uses of x-rays?

Answer 8

x-ray images, detecting flaws in metal (ionising radiation)

Question 9

what are the uses gamma rays?

Answer 9

kill cancerous cells (ionising radiation)