EM spectrum Comparison

Question 1

Purpose of Radio waves

Answer 1

police radio communications,
military aircraft radios and television transmissions

Question 2

large doses of radio waves are believed to cause:

Answer 2

cancer,
leukaemia and other disorders.

Question 3

why do you hear interference on your radio in a thunderstorm

Answer 3

Because radio waves are also given off by lightning

Question 4

Radio waves are given off by

Answer 4

stars, sparks and lightning

Question 5

microwaves in microwave oven are made by

Answer 5

magnetron

Question 6

how does microwave help to cook food

Answer 6

Microwaves cause water and fat molecules to vibrate, which makes the
substances hot

Question 7

microwaves are also used by

Answer 7

traffic speed cameras, and for radar, which
is used by aircraft, ships and weather forecasters

Question 8

Prolonged exposure to microwaves is known to cause

Answer 8

cataracts

Question 9

what is cataracts

Answer 9

It is a clouding of Cornea

Question 10

Infra-red waves are given of by

Answer 10

HOT
objects

Question 11

Infrared waves are used for

Answer 11

TV remote control, physiotherapy and Night vision

Question 12

The danger from too much infrared radiation is

Answer 12

Thermal burn

Question 13

Too much visible light can

Answer 13

The retina in our eyes

Question 14

UV radiation is produced by

Answer 14

special
lamps and very hot bodies

Question 15

Uses for UV light include

Answer 15

sun tan, detecting forged bank notes in
shops, and hardening some types of dental filling. To treat vitamin D deficiency

Question 16

Large doses of UV can

Answer 16

Damage the retinas in your eyes, sunburn and even skin
cancer