Another atmospheric wonder of the world is the rainbow. world is the rainbow. Rainbows are common: it requires only the right combination of the sun and rain fo

Another atmospheric wonder of the world is the rainbow. world is the rainbow. Rainbows are common: it requires only the right combination of the sun and rain for one to appear, yet rainbows have a special place in many of the world's cultures.

A rainbow is the refraction of sunlight or raindrops. The larger the raindrops, the more brilliant are the colors in the rainbow. Sometime, when a rainbow is particularly bright, a paler, secondary bow with the colors reversed, can appear behind it. If someone watching the rainbow moves, the light will be refracted through different raindrops. The sun, always behind the watcher, will light up constantly changing raindrops as the watcher moves forward, until there is no more rain left to refract and the rainbow fades.

3. why does a rainbow move?
4. what dies the word "it" (sentence 2) refer to?
5. when there is a rainbow where does the sun take place??