The light is refracted
yes
A rainbow can be formed when sunlight shining from behind you, passes through raindrops ahead of you, and is split into separate colours.
When sunlight passes through raindrops, the drops scatter the light which then appears to the onlooker to form a band of colors in the sky - or as we call it, a rainbow.
When sunlight passes through raindrops, the rain drops act like a glass prism. The sunlight is split into the rainbow colours in the sky, and a rainbow appears.
The light separates, or refracts (I think that's the right word) into a rainbow inside the drop and recombines into white light as it leaves the drop. That is why you need many many drops to see a rainbow.
White light is really all the colors of light, red to indigo, combined together. Running the light through a prism (including raindrops) splits those colors out separately because each light bends a little more or less than its neighboring colors when going through the prism (or raindrops).
A glass prism is used to separate sunlight into individual colours. The same affect is seen when sunlight passes through raindrops, forming a rainbow.
a rainbow
A rainbow
The sun makes rainbows when white sunlight passes through rain drops. The raindrops act like tiny prisms. They bend the different colors in white light, so the light spreads out into a band of colors that can be reflected back to you as a rainbow.
White light is a mixture of all the colors of the rainbow. When white light passes through raindrops refraction occurs; it changes direction - we see colors because the amount of refraction depends on the frequency (ie the color) of the light passing through the water - this process is called dispersion.
it makes a rainbow!