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

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

In this cool catalase and hydrogen peroxide experiment, kids put a potato in a jar of hydrogen peroxide to see how catalase acts as an enzyme.

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.

This science fair project teaches students about wilting and browning of salad greens.

This science fair project focuses on the use of a conductivity device that will determine if a substance dissolved in water can or cannot conduct electricity.

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

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

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

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

The purpose of this science fair project is to build a basic radio.

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

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

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

Science fair project which evaluates different athletic shoes in order to find out whether any of them affect a person's ability to run.

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

This fun science fair project idea helps students learn how acid rains are formed and explore how acid rain damages the environment.

This science fair project idea compares biodiversity between drops of water.

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.