Free Science Activities
Spinning Colors

In these free science activities you will see how colors are blend together to form new colors in this fascinating activity. See how your eyes and brain working together create new colors as circles of colors spin around.

Spinning colors science activity, Photo by Myrna Martin
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Materials

  • Index cards
  • Glass
  • Colored felt pens
  • Ruler
  • Toothpicks
  • Straw
  • Scissors

Directions

  1. Place an index card on a table and make a circle on it by drawing around a glass.
  2. Divide the circle into 8 sections.
  3. Color the sections with red, green and blue felt pens similar to the picture above.
  4. Create three or four other circles and color them with different colored felt pens.
  5.  After all the circles are colored cut them out with a pair of scissors.
  6. Make a hole in the center of each circle.
  7. Push a toothpick through the hole until it is half-way through.
  8. Place the bottom half of the toothpick into a straw so that the colored circle rests on the top of the straw.
  9. Push the paper circle with your finger so it spins around very fast.
  10. The faster the circle spins the more the colors will blend. The red, green and blue circle should become a light gray.
  11. The other circles will change color or blend as they are spun depending on the colors you used.

Science behind the activity

When you spin the circle fast your eyes see all the colors at the same time. The spinning colors are moving so fast your brain can't separate them and instead combines them to make new colors.

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