C - Waves - The Electromagnetic Spectrum

Question 1

Name the uses and dangers of radio waves

Answer 1

Uses - Broadcasts and communication.Dangers - none.

Question 2

Name the uses and dangers of microwaves

Answer 2

Uses - Cooking, satellite transmissions, mobile phonesDangers - Internal heating of body tissue

Question 3

Name the uses and dangers of infrared

Answer 3

Uses - Heaters, thermal imaging, night vision equipmentDangers - Burns skins

Question 4

Name the uses and dangers of visible light

Answer 4

dangers - strong light causes damage to vision

Question 5

Name the uses and dangers of ultraviolet

Answer 5

skin cancer and blindness

Question 6

Name the uses and dangers of x-rays

Answer 6

mutations in cells and severe burns to the skin

Question 7

Name the uses and dangers of gamma rays

Answer 7

cancers and cell mutation

Question 8

How can we protect ourselves from the dangers of microwaves

Answer 8

small metal grid in microwave door prevents microwaves getting out

Question 9

How can we protect ourselves from the dangers of infra-red

Answer 9

distance - don’t get too close to the hot object (e.g. electric fire)

Question 10

How can we protect ourselves from the dangers of visible ligth

Answer 10

we are adapted to reduce intake of light through our eyes when too bright - the pupil in our eyes becomes smaller in bright light and bigger in dim light.Wearing sunglasse or dark glass. e.g. welders wear dark glass.

Question 11

How can we protect ourselves from the dangers of ultraviolet

Answer 11

Eyes - sunglasses, hatsSkin - suncream or sunblock. Wearing clother or special garments like rashies.

Question 12

How can we protect ourselves from the dangers of How can we protect ourselves from the dangers of x-rays

Answer 12

The technician sits behind a lead screen or lead infused glass to protect from x-rays.

Question 13

How can we protect ourselves from the dangers of gamma rays

Answer 13

Nuclear power stations have massive sheilding from lead and concrete