Slide 2:
Ordinary light such as sunlight is white light.
It seems to have no colours, but it is a mixture of 7 colours. There are so many colourful things
around us!
Have you ever wondered how we see these colours?
When we see colours, we actually see coloured light.
Slide 3:
When we see an object, what we actually see is the light bouncing off it.
Often only a few of the colours in the light bounce off the object.
For example a red flower looks red because only red light bounces off it. The rest of the colours are absorbed by it.
Bouncing is reflecting.
Slide 4:
Colours And Rainbow
Slide 5:
How is a rainbow formed?
After a rainfall, when there is still some drizzling going on,
and sun shines between the clouds,
then (sometimes) a rainbow appears on the sky.
It so happens because the light rays passing through raindrops, split into the seven colours of which the white light is made up of.
So we can see a curved band of 7 colours on the sky.
The seven colours of light ! :
The seven colours of light ! Violet
Indigo
Blue
Green
Yellow
Orange
red
Slide 7:
V I B G Y O R
V I B G Y O R :
V I B G Y O R Can you fill the blanks correctly?
Rainbow is seen on the _______after _______.
Rainbow is formed when _______ shines between the clouds.
There are ______ colours in a rainbow.
_______ is the outermost colour of the
rainbow.
Slide 9:
What do we see when we see colours?
Why does a red flower look red?
What is rainbow?
Why cant you see a rainbow every time the rain comes?
What is V I B G Y O R?
Slide 10:
Things to remember
Colour is a function of light.
We see colours by reflection.
Rainbow is a 7- coloured band of light formed on the sky after a rain fall.
White light is made up of 7 colours.