This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

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

Score a bull's eye with this cool science fair project on horizontal projectile motion. Guide a marble to its target and predict its trajectory using math!

The objective of this science fair project is to determine whether drawing with the right side or the left side of your brain will produce a better picture.

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

What is a barycenter? Kids learn how gravity and mass influence the orbit of binary systems like planets and moons or stars and planets in this cool experiment.

What is condensation? Little mad scientists will learn about condensation, states of matter, and air pressure by conducting this cool science experiment.

Explore the concept of receptive fields and why different parts of our body have different levels of sensitivity.

This science fair project idea tests whether it is true that humans are in the morning than later during the day/night.

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).

Kids will enjoy this cool demonstration of Newton's Third Law and the conservation of linear momentum.

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.

The objective of this science project is to investigate why NASA has been using aerogel for the Stardust Project for collecting gas and dust from comets.

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.

In this experiment you simulate radioactive decay in order to gain an understanding of the basics of half-life.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

This project will explore whether test subjects, deprived of points of reference, will, in attempting to walk a straight course, walk in circles.

This science fair project investigates how temperature of a room affects the burn rate of a candle.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

This optics-based science fair project idea teaches kids about real and virtual images with a mind-bending candle illusion inspired by Pepper's Ghost.

Magnets may hold up papers on the fridge, but is it the paper that attracts them? Find out more with this kindergarten science investigation.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

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

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

Science far project which determines whether the material of a baseball bat affects the distance that the baseball will travel.