Science project

Colored Light and Chlorophyll


  • Cellophane in different colors, or thin plastic sheets and colored markers
  • Scissors
  • Black construction paper
  • Clear tape
  • Green plant with many leaves


  1. Cut out 6 one-inch squares from each color of cellophane. To make your own “colored cellophane,” just color thin sheets of plastic (such as those used for transparencies) with different colors of permanent markers.
  2. Cut out 6 one-inch squares from the black construction paper.
  3. Take two squares of the same color, and tape together three of the edges to make a sort of bag.
  4. Slip the bag over one of the leaves on the plant, and tape together the fourth side.
  5. Repeat this process with the rest of the squares, distributing the colors as evenly as possible over the entire plant.
  6. Leave the plant near a window for a week. Rotate the plant each day so that the leaves get similar amounts of sunlight.
  7. Carefully remove the bags from the leaves, taking data about the leaf’s color as you remove each one. (You can use a chart, similar to the one below, to take your data.) Make sure not to lose track of which bag each leaf had on it.
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Warning is hereby given that not all Project Ideas are appropriate for all individuals or in all circumstances. Implementation of any Science Project Idea should be undertaken only in appropriate settings and with appropriate parental or other supervision. Reading and following the safety precautions of all materials used in a project is the sole responsibility of each individual. For further information, consult your state's handbook of Science Safety.

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