Paper Plate Education
Activity: Rainbow Finder II
Make a rainbow by spinning a plate on a turntable while holding a colored marker on the plate, as shown in the Rainbow Turntable activity.
Outside on a sunny day, ask the children in which direction they should look to see a rainbow, if it were raining at that moment. Reinforce that it is dangerous to look directly at the sun, for eye damage may result.
With a garden hose, spray a fine mist first toward the direction of the sun while the children stand behind you. Slowly sweep the mist around in a large circle, continuously asking them to call out when they spot the rainbow. The rainbow should appear when their backs are to the sun. Note how rainbow finding is an eye-friendly activity, for the colorful arcs are opposite the harmful rays of the sun.
To find the rainbow using the Rainbow Turntable plates, look down along the trough of the plate at the crease. Position it so you see the shadow of your head at the other end.
Notice how a low sun produces a high rainbow, and vice versa. The largest bows are at sunrise and sunset, while midday the rainbow may appear so low it is in the foreground, below the horizon.
Contributed by Chuck Bueter.
Copyright ©2012 Chuck Bueter. All rights reserved.