In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

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

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

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.

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

If you're looking for a fun way to have your child gain practice pattern-making while working out fine motor skills, making Washi eggs is the perfect activity.

Work on measurement by sliding cards along a table with your second grader in this fun game. Use centimeters or inches, add up your totals, and see who's won!

This hands-on activity gives your child an opportunity to apply various strategies to solve a problem and to check if his answer makes sense.

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

Find out whether cast iron or regular teflon pans heat up faster and also retain their heat longer.

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

Use playing cards to learn about temperature as well as positive and negative integers in this fourth grade math game.

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

This project tests the hypothesis that dark colors absorb more heat than light colors.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

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

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

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!

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

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.

Add these fun chocolate Groundhog Day cupcakes to your holiday desert recipe repertoire! They're fun to make with your kids and a delicious winter snack.

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.

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

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?