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Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

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.

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

The goal of this project is to create an exciting topographical map out of dough.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

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

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

This science fair project idea investigates whether plants can survive being frozen.

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

In this science fair project, young children will become aware of and have the opportunity to experience the four basic tastes: sweet, sour, salty, and bitter.

This science fair project idea explores substances that cause a bubble to last longer.

In this project students experiment with making music using only glasses of water.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

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 talking to a plant will help it grow.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.