Tree and Light
A tree is alive and requires energy. We humans get energy from the food that we eat. A tree captures energy from the sun and converts it. This means that trees have to have sunlight in order to live. What would happen to a tree if it didn't get enough sunlight?
To conduct this experiment, you need:
- black construction paper;
- a tree with large leaves (such as maple, linden, oak, or lilac).
This experiment doesn't work well with conifers.
- Cut two squares or rectangles of construction paper large enough to cover a leaf.
- Sandwich the leaf between the two pieces of construction paper. IMPORTANT: THE LEAF MUST BE ALIVE AND STILL ON THE TREE. li> Tape the construction paper so that it stays on the leaf. The leaf must be completely covered so that no light gets to it.
- Leave the paper in place for a few days, then take it off.
Go back and look at the leaf a week after you take the construction paper off. Has the leaf turned green again? Is it dead?
Redo the experiment but, this time, cut small circles in construction paper.