In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

Science fair project that models the subterranean movement of water, using Darcy's Law. How can this information be used in hazardous material spills?

This science fair project idea models industrial oil spills and determines if they have an impact on wildlife living beneath the surface of the water.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

Research basic components of vacuum cleaners, consult vacuum cleaner manufacturers for advice. Design vacuum with attachments that change automatically.

This science fair project idea explores discover whether there are any patterns or trends in the memories between different genders.

Research different measurement systems, design your own new or improved system that can measure something difficult to measure with traditional systems.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Research currently available fuel sources, and fuel manufacturing and processing techniques. Propose an alternative fuel source.

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

Develop a new system for predicting geographic changes. Demonstrate the nature of geographic change. Make logical predictions.

Make a list of items that need repurposing such as e-waste, batteries and mattresses. Invent your own original repurposed design.

Thoroughly research image search engines. Consider possible improvements for visual search engines. Help design better image-matching engines.

This fun science project explores the climate change over the course of the history of Earth and helps construct a diorama representing a geologic time period.

Research Earthship buildings. Draft a unique architectural design that repurposes used, discarded radial tires. Build scale model of structure.

Science fair project that builds a magnetometer and demonstrate its uses.

Research and understand basic computer science. Build a simple computer, following instructions found online. Design a new or improved feature.

Design and build an invention inspired by Rube Goldberg's designs. Build your invention. Test the machine, write a detailed report.

Monitor the impact learning how to play chess has an academic performance. Divide subjects into two groups compare GPA

Do you hate to waste energy? In this experiment, you will design a machine that is powered by the process known as energy transformation.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

In this wind tunnel experiment, you'll make a wind tunnel to test lift and airflow on a model plane and explore aerodynamics and the Bernoulli Principle.

Design a livable building that functions without electricity. Consider necessities, comforts and entertainment. Build a scale model of your design.

Science fair project that illustrates the properties of black holes in space.

This project involves the development of a website using free software online to promote the value of science.

Analyze competed scientific studies to determine the effectiveness of ancient remedies. Create a chart that illustrates the effectiveness of these treatments.

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.