This science fair project investigates why the number of visible stars changes from place to place.

This science fair project idea identifies trees using a dichotomous key.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

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

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

This science fair project idea produces sounds by creating vibrations using different objects.

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

In this project, waves of vibrations are experimented with using water in glasses.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

In this project students experiment with making music using only glasses of water.

Construct and experiment with a periscope using reflected light rays to gather an image.

In this science fair project you will make a model of a cell membrane using very simple material.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Science fair project that examines condensation and the conditions needed in order for dew to form.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

The project is to investigate yeast fermentation and its results on hand of latex balloons.

This science fair project idea examines which type of insulation holds in the most heat.

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

This science fair project idea provides evidence that air is everywhere and takes up space.

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.