3.13- recall the detrimental effects of excessive exposure of the human body to electromagnetic waves

Microwaves:

Internal heating of body tissue

Infra-red:

Skin burns

Ultraviolet:

Damage to surface cells and blindness

Gamma Rays:

Cancer, mutations

3.12 - The Uses of Electromagnetic radiations

Radio waves:

broadcasting and communications

Microwaves:

 cooking and satellite transmissions 

Infrared: 

heaters and night vision equipment 

Visible light: 

optical fibre and photography

Ultraviolet: 

fluorescent lights

X-rays:

 observing the internal structure of objects and materials and medical applications

Gamma Rays: 

sterilising food and medical equipment