Activity Developed by the University of Colorado Museum of Natural History
Prediction – order of the colors
Paper towel roll
Craft knife or scissors
Cardboard or cardstock
If you want to decorate your spectroscope, do that first.
Use a craft knife to cut a slit at a 45 degree angle towards the bottom 4th of the paper towel tube, cutting only about halfway through the tube.
Across from this slit, cut a small square viewing hole.
Trace one end of your paper towel roll on cardboard or cardstock. Cut out and cut a rectangle shaped slit in the center of the circle to let light in.
Tape the circle to the top of your paper towel tube.
Insert the CD into the slit, with the shiny side of the CD facing up.
Take your spectroscope outside, and point up at the sky but NOT directly at the sun. Look through the peephole and you should see a rainbow!
Experiment with other forms of light, like from a candle or a lamp, or when it’s cloudy. How is the rainbow changing?
HYPERLINK "https://littlebinsforlittlehands.com/sugar-water-density-rainbow-science-experiment/" https://littlebinsforlittlehands.com/sugar-water-density-rainbow-science-experiment/ connection back to density.
Ways to make rainbows at home
To view a rainbow, you have to be between the sun and the rain, so that the light can shine through the water and create the rainbow in a direction you can see it.
Early Learning 101: