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Use pepper and soap to discover some fun facts about the properties of water.

This science fair project idea determines which flower lasts the longest.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

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

The purpose of this science project is to determine which stimulus, gravity or water, will cause the greatest growth response in a plant.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

For your budding first grade scientist, all you need is some simple, natural materials to create an amazing ant farm. Here's how to get started.

Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.

Plant sunflower seeds , measure height, calculate average height, compare size and weight of heads. Interpret findings in detailed report.

Demonstrate the capillary function in plants by adding food coloring to glasses of water. Slice stalks of celery and leafy tops. Compare color of leaves

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

Compare air temperature with the infrared temperature from a reflecting surface at different times of the day, in shade and in sunlight.

Science fair project that determines the correlation between the ability of selected materials to conduct heat and a material's density.

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

Demonstrate and describe acid-base reactions of baking soda and baking powder by making pancakes.

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

Science fair project that demonstrates the different phases of the moon by physically representing them with construction paper and a shoebox

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

2011 VIRTUAL SCIENCE FAIR ENTRY: The objective of this science fair project is to develop a microcontroller and circuit that can conduct electricity.

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

Examine the influence of the phase of the moon on moisture capillarity in garden soil. Measure and record the depth at which water is first detected.

Evaluate the ability of a biodegradable dish detergent to increase the penetration of water in hydrophobic soils.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.