Check out this fun high school science fair project idea to investigate how the cell membrane regulates what moves into and out of cells.

Research long-term effects and draft a questionnaire about frequency of marijuana use and average annual income. Interpret findings in a detailed report

In this science fair project, students make their own rain gauge to measure rainfall.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Find a mathematical relationship between the intensity of a sound wave and distance from the sound source. Use a pedometer and a sound level meter.

This experiment strives to determine if tracking of conservation habits will lead to reductions in a family's electricity and water bills.

Learn the anatomical and physiological differences between central and peripheral visual systems.

Check out this cool science fair project idea to explore the relationship between pulse rate and blood pressure in healthy people.

The objective of this project is to evaluate whether a top will spin at different rates during different phases of the moon.

Learn the chemistry and physics of the brain, how our nervous system work. Demonstrate that the brain is an electrical and chemical machine.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

This science fair project idea identifies and understands adaptations in birds.

Start your toy engines -- this is going to be a fast and friction-filled race!

Observe trends in the properties of writing materials over past 5000 years and extrapolate to future time. Prepare a table that compares writing material.

This science project is to discover which Black Walnut tree tissue contains the most concentrated amount of Juglone, a substance that works like an herbicide.

This science experiment explores why leaves change color in the fall and the role of photosynthesis in leaf coloration.

Science fair project that determines the correlation between the ability of selected materials to conduct heat and a material's density.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

Science fair project that evaluates how well clothing fabrics block UV radiation by examining the properties of different fabrics.

By dropping a magnet through a copper tube, kids observe the cool (and bizarre) braking effect produced by the eddy currents predicted by Lenz's law.

This biodiversity project examines the biodiversity in your own backyard.

Boiling water in a paper cup is possible because of convection and the thermal properties of water and paper. Learn how with this fun science fair project idea.

This fun science fair project idea helps students learn how acid rains are formed and explore how acid rain damages the environment.

This science fair project idea examines whether people can decode scrambled messages.

Compare ability of selected materials to block UV-A radiation. Shine black light though glass at detecting beads underneath. Note color intensity.

Science fair project that teaches you key definitions of molecular science, and how different isotopes of an element affect the relative atomic mass.

Science fair project idea examines what is remembered from high school education. Formulate and administer high school curriculum tests to adults over 21.

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.