P12 Electromagnetic Spectrum

Question 1

Uses of radiowaves

Answer 1

-broadcasting radio and television
-communications
-walkie talkies

Question 2

Uses of microwaves

Answer 2

-communications
-satellite communications
-cooking food

Question 3

Uses of infared radiation

Answer 3

-electrical heaters
-remote controls
-thermal imaging cameras

Question 4

Uses of visible light

Answer 4

-Photography
-illumination
-fibre optic communications

Question 5

Uses of ultraviolet

Answer 5

-killing bacteria
-phototherapy
-sun tanning

Question 6

Uses of x-rays

Answer 6

-detects bone fractures/breaks
-detects objects (airports)
-detects dental problems

Question 7

Uses of gamma rays

Answer 7

-radiotherapy
-food irradiation
-manufacturing

Question 8

Dangers of microwaves

Answer 8

High exposure levels can lead to skin burns

Question 9

Dangers of infared radiation

Answer 9

-thermal burns
-photoaging

Question 10

Dangers of visible light

Answer 10

Damages the retina

Question 11

Dangers of ultraviolet

Answer 11

-Damage skin cells
-skin cancer
-damage to the eyes

Question 12

Dangers of x-rays

Answer 12

-damages cells inside the body
-cause dangerous ionisation

Question 13

Dangers of gamma rays

Answer 13

-damage cells inside the body
-causes dangerous ionisation which damages DNA