Science project

Give Me Some Light

(14 ratings)

by Nancy Rogers Bosse

Third Grade Science Science projects: Give Me Some Light

Type

Botany

Grade

2^nd – 4^th grades

Difficulty of Project

Easy

Cost

Less than $5.00

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Grade

Third Grade

Subject

Science

Life Science

Safety Issues

None

Material Availability

Readily available

Approximate Time Required to Complete the Project

About a week to collect data; one day to write the results and prepare the science fair display

To explore the affect of sunlight on a leaf

Indoor plant with green leaves
Black construction paper
Scissors
Tape

Plants use sunlight to grow. Sunlight also produces chlorophyll in the plant causing the leaves of the plant to be green.

In this investigation, sunlight is blocked from a leaf in order to see the affect that sunlight has on leaves.

Terms

photosynthesis: a chemical process that produces energy

chlorophyll: a chemical that gives leaves their green color

Concepts

Chlorophyll is a chemical that causes a plant’s leaves to be green. Plants need sunlight to produce chlorophyll.

Research Questions:

Why are plant leaves green?
What happens if a plant does not receive sunlight?

Gather the necessary materials.
Cut the construction paper into two pieces that are large enough to completely cover one leaf of the plant.
Cover the front and the back of the leaf with the construction paper and tape around the edges.
Continue to provide the plant with water.
After seven days, uncover the leaf and record the results.

Articles

“Why Do Leaves Change Colors in the Fall?” at www.backyardnature.net

“The Busy Leaf” at www.ftexploring.com/photosyn/chloroplast.html

“Plants and Sunlight” at www.squidoo.com/plantsandsunlight

Websites

Biology 4 Kids at www.biology4kids.com

“How Plants Grow” at Science Kids at www.sciencekids.co.nz

Author: Nancy Rogers Bosse

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