High School Science Experiments

Our high school science experiments page features experiments that are appropriate for high school level science projects. You can search by grade, such as 9th grade science fair projects, 10th grade science fair projects, 12th grade science fair projects, or search by experiment title.

Each science experiment will show you what you need and simple instructions for how to perform the experiment. All are free science experiments for kids and discuss the scientific principles demonstrated by the child science project.

I recommend these printable science project plans for K-12 for hundreds of great project blueprints and this step-by-step guide for doing an award winning science fair project. Also be sure to check out these fun science kits as a fast, simple way to get started on your science experiment.

9th Grade Science Projects
Beans Passing Gas Science Experiment
Biology Science Projects
Creating Science Fair Projects On a Budget
Doppler Effect Science Experiment
Egg In A Bottle Science Experiment
Fertilizer Testing
Hydrogen Fuel Cell
Osmosis and Diffusion Science Experiment
Testing Permanent Markers
Toothbrush Bacteria Science Fair Project

Where would you like to go next?

...See more of our free science experiments by age group, science type, or an alphabetical listing of all experiments?

...Download printable science project plans for K-12?

...Get step-by-step instructions on how to do an award winning science fair project?

...Or pick up science kits for your project?

Submit Your Science Experiments

Send in your great science experiments to keep this site fresh & fun.

Submit your science experiments and you may be included in our upcoming newsletter as well as website!

High School Science Experiments Page