The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

This science fair project idea identifies clouds as a means of predicting the weather.

This science fair project idea deals with the qualities of shade on a sunny day.

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

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

This Mother's Day, mix in some fifth grade science learning to create this fabulous fudge!

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

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

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

Science fair project that compares the freezing temperature of salt water and freshwater in order to learn about supercooling and condensation nuclei.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.