1. The effects of exercise on the heart rate

This is a great science fair project idea for high school students. The experiment involves measuring the effects of exercise on the heart rate. You will need to use a pulse oximeter to measure the pulse rate before, during and after exercise. You can also use a heart rate monitor to track the heart rate throughout the experiment. You may want to measure the heart rate of different people under different conditions. For example, you could measure the heart rate of a runner before and after a race. You could also measure the heart rate of a person who is just walking or jogging. The results of the experiment could provide insight into how different forms of exercise affect the heart rate.

2. The effects of different types of music on concentration

This science fair project could involve testing the effects of different types of music on the concentration of high school students. You could set up an experiment in which students are asked to complete a task while listening to different types of music. You could measure the time it takes students to complete the task and the accuracy of their answers. This experiment could also be conducted in different environments, such as a classroom or a library. The results of the experiment could provide insight into how different types of music can affect concentration.

3. The effects of light on plant growth

This science fair project could involve testing the effects of different types of light on the growth of plants. You could set up an experiment in which plants are exposed to different types of light, such as sunlight, fluorescent light, and LED light. You could measure the growth of the plants over time and compare the results. You could also measure the amount of water and nutrients the plants receive. The results of the experiment could provide insight into how different types of light affect plant growth.

4. The effects of noise on learning

This science fair project could involve testing the effects of noise on the learning of high school students. You could set up an experiment in which students are asked to complete a task while listening to different types of noise. You could measure the time it takes students to complete the task and the accuracy of their answers. The results of the experiment could provide insight into how different types of noise can affect learning.

5. The effects of temperature on the growth of bacteria

This science fair project could involve testing the effects of different temperatures on the growth of bacteria. You could set up an experiment in which bacteria are exposed to different temperatures, such as room temperature, hot and cold. You could measure the growth of the bacteria over time and compare the results. The results of the experiment could provide insight into how different temperatures affect the growth of bacteria.

6. The effects of air pollution on plant growth

This science fair project could involve testing the effects of air pollution on the growth of plants. You could set up an experiment in which plants are exposed to different levels of air pollution. You could measure the growth of the plants over time and compare the results. The results of the experiment could provide insight into how air pollution affects plant growth.

7. The effects of different colors of light on plant growth

This science fair project could involve testing the effects of different colors of light on the growth of plants. You could set up an experiment in which plants are exposed to different colors of light, such as red, blue, and green. You could measure the growth of the plants over time and compare the results. The results of the experiment could provide insight into how different colors of light affect plant growth.

8. The effects of pH on the growth of bacteria

This science fair project could involve testing the effects of different pH levels on the growth of bacteria. You could set up an experiment in which bacteria are exposed to different pH levels, such as acidic and alkaline. You could measure the growth of the bacteria over time and compare the results. The results of the experiment could provide insight into how different pH levels affect the growth of bacteria.

9. The effects of fertilizer on plant growth

This science fair project could involve testing the effects of different types of fertilizer on the growth of plants. You could set up an experiment in which plants are exposed to different types of fertilizer, such as organic and chemical fertilizer. You could measure the growth of the plants over time and compare the results. The results of the experiment could provide insight into how different types of fertilizer affect plant growth.

10. The effects of UV light on the growth of bacteria

This science fair project could involve testing the effects of UV light on the growth of bacteria. You could set up an experiment in which bacteria are exposed to different levels of UV light. You could measure the growth of the bacteria over time and compare the results. The results of the experiment could provide insight into how UV light affects the growth of bacteria.