Become familiar with ratios and learn how to measure the diameter of the Sun and the Moon in this fun science fair project idea.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

The purpose of this science fair project is to determine whether Green Bags, with or without refrigeration, are most effective in preserving food.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

The objective of this science fair project is the compare the rate and efficiency of disaccharide and polysaccharide fermentation by yeast.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

Construct calorimeter and determine the caloric value of a sample of foods by change in temperature for each of the foods.

The objective of this science fair project is to investigate salt water density.

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

This experiment will determine how different kinds of light affects the strength of bakerâs yeast.

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

Kids learn how fiber optics work with a dramatic total internal reflection experiment using a fish tank, water, and a laser pointer.

Looking for a project on machines? Get a fun elementary school science fair project idea to design a compound machine using your knowledge of simple machines.

.Have you ever had problems with your wifi signal strength? In this experiment you will learn about how wireless signals pass through the air and solid objects.

How do cold packs work? Explore endothermic reactions by comparing the temperature change that results from various chemicals added to water to find out!

This experiment evaluates whether a person's eye color affects their ability to identify colors in low light.

Will increasing the amount of salt in water effect how slow or fast the water freezes?

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

Science fair project that measure winds speed, temperature, and time of day in order to determine the origins of the wind.

This project compares different liquids and the freezing, melting and boiling points of liquids.

The goal of this science fair project is to evaluate the effect of heat on sound wave frequency.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

Check out this fun science fair project idea to learn about seismic waves and how fast they travel during an earthquake.