Science Fair Projects on Photosynthesis

Science fair projects on photosynthesis will help you to understand how plants turn light into food and energy. In the following botany experiments you will be manipulating specific factors to see if they impact how fast photosynthesis occurs. Each of the following experiments have the potential to spawn many award winning science fair projects so be ready to be inspired. These are great ideas for 4th grade.

The presence of specific gases can speed up or inhibit the process of photosynthesis. This is a very complicated hypothesis that will require several experiments and possibly even several science fair projects on photosynthesis to test thoroughly. To test this hypothesis you will first need to break it down into simpler problems. For example you will need identify what gases you want to test.

Temperature impacts how fast the process of photosynthesis occurs. This is another interesting hypothesis that you can test with science fair projects on photosynthesis. For this experiment your independent variable will be the temperature you exposure your plant to and the dependent variable will be the rate that photosynthesis occurs at. You can advance this project by seeing if different plants respond differently to temperature increases or decreases.

Moisture level impacts how fast the process of photosynthesis occurs. To test this hypothesis you will want to develop botany experiments that expose plants to various levels of moisture. Your job will be to determine if the amount of water in a plant's environment will impact its ability to photosynthesize. You will then need to create photosynthesis project boards that illustrate what you did to test your hypothesis and what you found out.

The color of light that a plant is exposed to will impact its rate of photosynthesis. The independent variable for this experiment will be the color of the light used and the dependent variable will be the rate of photosynthesis. You can create a simple experiment by using just two tests. The first test will be your control and it will use normal sun light. The second test will be your experiment test and it will involve a light color light blue light or black light. Did the color of the light matter? If it did then you can expand your experiment by looking at how various light colors impact the rate of photosynthesis.

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The angle that the light hits a plant impacts its rate of photosynthesis. The independent variable for this experiment will be the angle the light hits the plant and the dependent variable will be the rate of photosynthesis. You can create several different experiments to test this hypothesis. Your first option is to monitor a plant throughout the day. As the sun moves across the sky the angle of its light will change naturally. To collect data all you will have to do is make your observations as the light changes. Your second option is to use an artificial light source and to change the angle of the light manually.