EM waves: uses and dangers.

Question 1

uses of radio waves

Answer 1

1) communication (radio and tv)

Question 2

uses of microwaves

Answer 2

1) heating food

2) communication (wifi, mobile phones, satellites)

Question 3

uses of in fared waves

Answer 3

1) heating or cooking things.
2) to monitor temperature
3) night vision

Question 4

uses of visible light

Answer 4

1) photography

Question 5

uses of ultraviolet waves

Answer 5

1) fluorescent lamps

Question 6

uses of x rays

Answer 6

1) x ray images (medicine and industry)

Question 7

uses of gamma rays

Answer 7

1) sterilising medical instrument

2) treating cancer

Question 8

dangers of radio waves

Answer 8

no known danger

Question 9

dangers of microwaves

Answer 9

possible heat damage to internal organs

Question 10

dangers of in fared waves

Answer 10

skin burns

Question 11

dangers of visible light

Answer 11

bright light can cause eye damage

Question 12

dangers of ultraviolet waves

Answer 12

1) eye damage
2) sun burn
3) skin cancer

Question 13

dangers of x rays

Answer 13

1) kills cells
2) mutations
3) cancer

Question 14

dangers of gamma rays

Answer 14

1) kills cells
2) mutations
3) cancer