Electric Magnetic Spectrum

Question 1

Gamma

Answer 1

Gamma radiation can be used to treat cancer in radio therapy by killing cells

It can be also used to sterilise food and medical equipment

Question 2

X-ray

Answer 2

X-rays can be used to image the inside surface of objects including materials and in our skin

E.g. X-ray

Question 3

Ultraviolet

Answer 3

Some chemicals can absorb UV light. This is then Easley as visible light

This is called transmission and is used in highlighter pens detecting false bank notes an in UV lamps

E.g. Sun Tan Bed

Question 4

Visible

Answer 4

Use a light bulb to see visible light.

Used to see

E.g. Our eyes

Question 5

Infra red

Answer 5

Used for communication between computers

Optic fibres carries info using infrared

A toaster transfers infra red radiation

Thermal images show the amount of infra red given off from objects

E.g. Toaster and remote

Question 6

Microwave

Answer 6

Communication satellites use microwaves to transfer info

Mobile phones also communicate using microwaves

Microwave ovens transfer food, heating it up inside.

Question 7

Radio waves

Answer 7

Used to transfer the forecast

Transmit tv broadcast

These communications can be also sent via satellites