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In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

Examine whether males or females are more likely to have a higher center of gravity.

This science fair project idea explores the fastest average speed a human can talk.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

Learn about our response to scents that existed in our environment over evolutionary time and consider why scents might affect our mood state.

This fascinating science fair project explores eye color genotypes.

The goal of this science fair project is to determine which cheese grows mold the fastest: Vermont Cheddar, American, Brie, or Camembert?

This project investigates several commercially decaffeinated tea types (black, green, oolong, white) for the presence of detectable traces of caffeine.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

Science fair project that helps visualize how the human brain functions by constructing a model of a brain.

The purpose of this science project is to determine whether the amount of air in a soccer ball affects how far it goes when kicked.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

What is a series circuit and how does it work? Learn about voltage, electrical current, and resistors in this cool science experiment!

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

Science fair project that determines how we can change potential energy into kinetic energy.

Check out this cool and free middle school science fair project idea on how to make a solar oven.

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

Kids make strong bubbles to investigate the effect different additives have on bubble life in this cool science fair project idea.

Science fair project in which you will graft branches from different fruit tree onto a root stalk.

Science fair project that examines the biodiversity of ant populations in various locations.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

Assess physical and mental states of subject before and after drinking coffee. Compare initial expectations with their reported conditions.

This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

Culverts transport seeds away from their original location to different places. This science project examines the effect of culverts on plant growth in streams.

This science fair project idea determines whether land or water warms more quickly and investigates how solar radiation increases the temperature of surfaces.

Kids will make a homemade electroscope and explain how it detects static charges through induction in this fun science fair project idea.

This science fair project idea explores the different properties & interactions of sugar molecules.