electromagnetic spectrum

Question 1

types of waves

Answer 1

Radiowaves
Microwaves
Infra red radiation
Visible Light
Ultra Violet
X-ray
Gamma ray

Question 2

What order is it in decreasing wavelength and increasing frequency

Answer 2

Radio waves-Gamma rays: decreasing in wavelength
Radiowaves- Gamma rays: Increasing in frequency

Question 3

Radiowaves properties and dangers

Answer 3

Communication (Radio…TV)
Non

Question 4

Microwaves properties and dangers and prevention

Answer 4

-Heating food, communication
-Heating of internal organs
-Metal walls, metal grid

Question 5

Infra-red properties and dangers and prevention

Answer 5

-Remote controls, night vision, fibre optic communications
-Skin burns

Question 6

Visible properties and dangers

Answer 6

Seeing, taking photographs
-Blindness/ eye damage

Question 7

what do all electromagnetic waves share? (3 points)

Answer 7

• They are all transverse
  -They can all travel through a vacuum
  -They all travel at the same speed

Question 8

the higher the frequency…

Answer 8

the higher the energy

Question 9

lower radiation is used for… (2 points)

Answer 9

-communications
-less harmful to humans

Question 10

ultraviolet light uses and dangers and prevention

Answer 10

-fluorescent bulbs, forgery detection
-eye damage, sunburn,cancer
-Sunscreen which absorbs ultraviolet light

Question 11

X-rays uses and dangers

Answer 11

-Used to take photos of bones, to detect dangerous objects in bags in airports
-kills cells, mutation, cancer
-lead aprons

Question 12

gamma rays uses and dangers and how to protect yourself

Answer 12

-sterilise objects, treat cancer
-kills cells, mutation, cancer
-radiation badges to know how much gamma radiation you are exposed to
-reducing exposure time