What exactly makes a rainbow? Well, for starters, you need light. That is the  main ingredient of making a rainbow. Then you'll have to have a little water. I'm talking about the mini rainbows by the way, not those big ones across the sky. Although I'm pretty sure that they both use the same things. Anyway, rainbow making is super easy.

Since you now have your main things, you're going to have to figure out how to make the rainbow actually appear. Instead of a sprinkler rainbow, I'm going to tell you how to make a rainbow with a glass prism. So first off, get the glass prism, and go into a sunny spot where you feel like you can get a lot of light. Then get a clear, plastic cup and fill it with water. Place it on the ground in the middle of the sunny spot. Next, get your glass prism and maneuver your prism until you can see a faint rainbow in the shadow of the plastic cup. You will see that there are the seven colors of light. Now you accomplished your rainbow making!



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