This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

The project determines which laundry detergent is best for cleaning clothes.

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

This science fair project idea examines liquids of different densities.

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.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

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

The project examines absorbent polymers absorbency in disposable diapers and their unique ecological problem to the environment.

The project determines which type of birds prefer which type of birdseed.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

Do you think heat can affect a plant's growth rate?

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

This science fair project idea produces varying pitches of sound.

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Compare animal and plant fats and observe, and record, and draw conclusions about their similarities and differences.

This science fair project idea investigates if fats add to the flavor of food.

In this experiment, students will discover how heat and pressure turn clay into slate, phyllite, and finally schist.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

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

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

This science fair project idea identifies the properties of soap bubbles and invents a new or improved bubble solution.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

Discover flight initiation distance as you play around in the park with this fun bird watching project!

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.