You have a lot of choices when it comes to topics and test subjects for bright science experiments. However, an easy genre to work with are lightbulb science fair projects. The following unique science fair projects will explore how light from a lightbulb can be used to influence the behaviors of people, fish, plants, bacteria and mold.

To start with lightbulb science fair projects can be used to examine human behavior. In this sample experiment you will see how exposure to different types of light bulbs impacts human emotions. You will want to examine if long periods of exposure to lightbulb light will improve your mood, make your mood worse or have no effect on it at all.

A variation on the above lightbulb science fair projects is to apply it to fish. For this experiment you will need an outside fish pond suitable for goldfish and an inside aquarium that is away from the window. Your job will be to observe the behavior of both test groups. The outside fish will be your control and the inside fish will be your test group. Do their behaviors match or are they different? What does this tell you about keeping fish as a pet?

Another variation that you can try out is to see if light produced by a lightbulb affects the growth patterns and health of plants. Since plants don't have emotional behaviors that you can test, their growth and health will need to suffice. In this experiment you will want to test the hypothesis that florescent light will impair a plant's health and growth rate, when compared to plants grown with natural light.

If you are interested in bacteria then use the supplies that come with science fair science kits to collect and grow bacteria colonies. Once you have your colonies growing you will set one aside as your control group. This test group will be exposed to only natural light. Test group B will be exposed to artificial light. Test group C will be left in the dark. Which colony grew the most?

The final project that you can complete is to see how light from a lightbulb impacts the growth of molds. This is a variation on the bacteria experiment. Set it up the same, but use mold cultures instead of bacteria cultures. You can grow your own mold by leaving out bread or orange peels. Make sure you use the same type of mold for each test group. Which test group grew the largest mold culture? What does this tell you about light and mold development?