Whirling Color Wheel
Try this experiment with a whirling color wheel to make all of the colors of the rainbow disappear. You'll find that this easy science activity for kids comes with a surprise ending -- and a lesson about color.
What You'll Need:
- White tag board or paper plate
Step 1: Cut a circle out of white tag board (or use a white paper plate).
Step 2: Use the protractor to measure and mark seven equally sized, pie-shaped sections on the circle.
Step 3: Paint each section with one of the seven colors of the rainbow. Make sure the colors are in the order in which they appear in the rainbow (violet, indigo, blue, green, yellow, orange, red).
Step 4: When the wheel is dry, punch a pencil through the middle to make a spinner.
Step 5: Spin the wheel, and watch what happens. If you spin the wheel fast enough, the seven colors will blend and the whole wheel will appear to be white.
Go to the next page to see how you can create an optical illusion by painting a plate, spinning it, and watching the designs change.