5. EM waves

Question 1

Order of the EM spectrum

Answer 1

Radio - Micro - Infrared - Visible light - Ultraviolet - X-rays - Gamma rays

Question 2

Longest wavelength & lowest frequency

Answer 2

Radio waves

Question 3

Shortest wavelength & highest frequency

Answer 3

Gamma rays

Question 4

Uses of Radio waves

Answer 4

Transmits radio broadcasts, TV programmes & MRI scans

Question 5

Uses of Microwaves

Answer 5

Communication, satellite transmissions & heats up water molecules

Question 6

Uses of Infrared radiation

Answer 6

Communication at short ranges, e.g. TV remote & computer in same room

Can have a burning effect

Question 7

Uses of visible light

Answer 7

Light bulbs, record images & snow blindness

Question 8

Uses of ultraviolet light

Answer 8

Forged banknotes, kills bacteria & damage skin cells

Question 9

Uses of X-rays

Answer 9

Detects broken bones, airport security scanners & increase risk of cancer

Question 10

Uses of gamma rays

Answer 10

Detects and treats cancer but can also increase risk of cancer