This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

This science fair project idea produces varying pitches of sound.

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

In this experiment, students will discover how heat and pressure turn clay into slate, phyllite, and finally schist.

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

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

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

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.

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.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

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

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

This science fair project idea investigates the difference in reaction times between boys and girls.

This science fair project idea determines the most effective method of preserving food.

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

In this fun experiment, learn about brand awareness and the influence of media on children by testing logo recognition in different age groups.

Explore if planting seeds in a certain direction will affect how fast it germinates.

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

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

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

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

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

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.