Electromagnetic Waves

Name the 7 types of waves from highest frequency to the lowest

Gamma

Xray

Ultraviolet

Visible

Infrared

Microwave

Radio

Are all electromagnetic waves longitudinal or transverse?

Transverse

Use of radio waves

Broadcasting and communications

Use of microwaves

Cooking and satellite transmissions

Use of infrared waves

Heaters and night vision equipment

Use of visible light waves

Optical fibres and photography

Use of ultraviolet waves

Fluorescent lamps

Use of x rays

medicine

Use of Gamma rays

sterilising food and medical equipment

Why do higher frequency waves tend to be more harmful?

they transfer more energy

Dangers of microwaves

can cause internal damage through heating

Precautions of microwaves

metal covers on microwave ovens prevent escape

Dangers of infrared radiation

skin burn and eye damage

Precaution of infrared

distance and time of exposure from the source

dangers of visible light

skin and eye damage

precautions of visible light

wear eye protection and do not look directly

dangers of ultraviolet (UV) radiation

eye damage, skin cancer, sunburn from the sun

precaution of ultraviolet (UV)

sunscreen, eye protection

Dangers of X-Rays and Gamma rays (ionising radiation)

Kill cells, mutations, cause cancer

Precautions of X-rays and Gamma rays

radiation badges, less exposure time