How to Catch a Rainbow With Science Experiments

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How to Catch a Rainbow With Science Experiments

A rainbow is comprised of all the visible colors of the color spectrum. When combined, these colors form the white light that we see all around us. By splitting this white light through the use of prisms, you can see each color. Colors are also divided into primary and secondary on a color wheel. When primary colors are mixed, they form the secondary colors on the color wheel. For example, by mixing yellow and blue, you create the color green. You can teach children about colors as well as the color wheel through a series of science projects.

Things You'll Need

  • 1 quart jar made of clear glass
  • Paper
  • Crayons
  • Bowl
  • Milk
  • Food coloring
  • Dish soap
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Instructions

  1. Rainbow Prisims

    • 1

      Fill the jar with water.

    • 2

      Set it on a windowsill so that a sunbeam shines through the jar. The sunbeam should throw a rainbow onto the ground beneath the jar.

    • 3

      Place a piece of paper under the rainbow.

    • 4

      Write the name of each color in the rainbow next to that color in crayon.

    Color Wheel

    • 5

      Fill a bowl with 1 cup milk.

    • 6

      Place 3 drops of red food coloring on one side.

    • 7

      Place 3 drops of blue food coloring 1/3 of the way around the bowl from the red food coloring.

    • 8

      Place 3 drops of yellow food coloring 1/3 of the way around the bowl from the blue food coloring.

    • 9

      Drop 1 drop of dish soap in the center of the bowl. The dish soap will spread across the top of the milk rather than mixing. Where it touches the food coloring, it should cause the food coloring to run. When the food colors begin to mix, they will form new colors.

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References

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  • Photo Credit Jupiterimages/Photos.com/Getty Images

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