2Rainbow Facts Rainbows are multi-coloured arcs that form in the sky A rainbow arch is a 42 degree anglestarting opposite the sunA rainbow is not an object, it cannot befelt or touched
3Rainbow Facts A rainbow is a full circle of light. A rainbow occurs when it is raining inone part of the sky and sunny in another.Rainbows can be seen not just in rain butalso mist and fog whenever there arewater drops in the air and light shiningfrom behind at the right angle
5Rainbow shape Rainbows are an arc shape because of the bending of and dispersion of lightthrough millions of water droplets.
6Refraction As the light travels through the water drop and disperses, it also doessomething called refraction.Refraction is what happens to the lightwhen it hits the water drop, it changesspeed and bends.
8Colours of the Rainbow Sir Issac Newton identified the 7 colours of the spectrum that make up white light.All of which are present in a rainbow inthe orderredorangeyellowgreenblueindigoviolet
9Colours of the Rainbow The name ROY G BIV is a good way to remember these colours and their order.OrRichard Of York Gave Battle In Vain
10White Light Sunlight is made up of the colours of the rainbow White light is when the colours are allmixed togetherWhen sunlight travels through the air inthe same direction we see white light
11White Light When the sunlight enters through a raindrop the colours separate causing usto see a rainbow (dispersion)Each raindrop makes its own rainbow butit takes millions of raindrops for us tosee a rainbow.
13Rainbow Experiment What you'll need A glass of water (about three quarters full)White paperA sunny day
14Instructions:Take the glass of water and paper to a part of the room with sunlight.Hold the glass of water above the paper and watch as sunlight passes through the glass of water, refracts (bends) and forms a rainbow of colours on your sheet of paper.Try holding the glass of water at different heights and angles to see if it has a different effect.