A cartoon character stands in a field looking at a rainbow

Look for a rainbow when the sun comes out right after it rains. Image Credit: NASA

      an arc or circle of colors that appears in the sky opposite the sun. A rainbow is caused by the sunlight shining through raindrops, spray or mist.

The colors red, orange, yellow, green, blue indigo and violet make up a rainbow.

A rainbow is created when sunlight passes through raindrops.

More Information:
http://ksnn.larc.nasa.gov/webtext.cfm?unit=rainbows   →
http://ksnn.larc.nasa.gov/k2/videos/s_makeRainbows_Hcap.html   →