Electromagnetic waves

Question 1

What is the electromagnetic spectrum?

Answer 1

Radio waves (Longest wavelength ; Lowest frequency)
Microwaves
Infrared
Visible light
Ultraviolet
X-rays
Gamma Rays (Shortest wavelength ; Highest frequency)

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Question 2

What waves are EM waves?

Answer 2

Transverse waves

Question 3

Uses of radio waves

Answer 3

Radio, over-the-air television and communications

Question 4

Uses of microwaves

Answer 4

Microwave ovens, satellite television and GPS

Question 5

Uses of infrared radiation

Answer 5

Remote controllers, ear thermometer and intruder alarms

Question 6

Uses of visible light

Answer 6

Optical fibres

Question 7

Uses of ultraviolet radiation

Answer 7

Sunbeds and sterillisation of equipment

Question 8

Uses of X-rays

Answer 8

Radiation therapy and imaging

Question 9

Uses of gamma rays

Answer 9

Radiation theraphy

Question 10

Effects of EM waves

Answer 10

Ionising radiation - Radiation that has enough energy to remove electrons from atoms or molecules, thus creating ions. Resulting in cancer.

Infrared heating