In this project, waves of vibrations are experimented with using water in glasses.

This science fair project idea determines if family members can recognize one another using only the sense of smell.

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.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

Find out whether a longer airplane will fly farther or a wider paper airplane.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

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

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

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

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

This science fair project idea discovers which parts of the body are more sensitive to touch than other parts of the body.

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

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

This science fair project enhances the understanding and awareness of energy use and explores the concept of energy efficient.

This science fair experiment idea's objective is to understand the general concept of an acid and a base.

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

In this project, several food items are tested to determine whether they contain starch.

This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

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

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

In this science fair project, students focus sunlight with a magnifying glass and trap shorter waves to melt ice.

This science fair project idea researches the definition of ‘biodegradable’ and explores this in a real-life setting.

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

In this project, a magnet is used to collect iron from breakfast cereals.

In this project, different childproof containers are tested to see how childproof they really are.