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

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

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

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

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

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

This science fair project idea creates cool new colorful fabric pattern designs and experiments with the mixing of colors.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

This science fair project idea examines liquids of different densities.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

This science fair project idea identifies the properties of soap bubbles and invents a new or improved bubble solution.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

This science fair project teaches students the differences between fruits and vegetables.

This science fair idea project identifies the active ingredients in soap and experiments with the properties of soap.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

This science project teaches students to classify different shapes of leaves.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

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.

This science project idea examines the effect of microwaving on various objects.

In this science fair project, students make their own rain gauge to measure rainfall.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.