Light

1
Light

• A special kind of wave!

2
Light is only one of a whole family of useful
waves!
RadioMicrowavesInfra-RedVisible
lightUltra-violetX-raysGamma rays
Next?.........
3
One wave we can see!

• Light is only one small part of a whole range of
  waves called the electromagnetic spectrum

Short wavelength long wavelength
4
Remember the waves in electromagnetic spectrum?

• Use this phrase to help you

RabbitsMateInVeryUnusualeXpensiveGardens
Radio waves
Microwaves
Infra red
Visible light
Ultra violet
X rays
Gamma rays
5
Visible light
Visible light is only a very small part of the
electromagnetic spectrum
Light that we can see can be split up as it
passes through a prism. We can then see these
different colours known as the visible spectrum.
A rainbow is formed when light is split up as it
passes through raindrops.
6
Can you remember the spectrum colours?
Red
Green
Orange
Yellow
Blue
Indigo
Violet
7
Where does visible light fit in?
Notice where violet light is?.... Next to Ultra
violet rays!
Notice where red light is?.... Next to Infra
red rays!
8
Time to test yourself!

• You have seen that visible light waves are only
  one small part of a range of useful waves called
  the electromagnetic spectrum
• There are seven types of waves in the
  electromagnetic spectrum remember the rabbit
  rhyme?
• Visible light can be split into seven colours
  called the visible spectrum remember ROY G BIV

Now try this test..
..or go back to the beginning if you are not
sure