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Science fair project that determines which types of clouds are best at blocking harmful UV radiation.

This classic children's game demonstrates how sound travels through air vs. through a solid.

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

This project investigates the affect of storage temperature on microwave popcorn.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

Test whether plants can grow without sunlight and water.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.

Explore the neural and mental mechanisms at play in mental imagery.

The objective of this science project is to determine the length of time for different seeds to germinate.

This science fair project determines what effect substances have on ice, and which of these products most effectively melts ice.

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

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

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.

This science fair project studies which color(s) of flowers butterflies & bees are attracted to and if color plays a role in flower selection for pollination.

This science fair project idea explores if an LED light can be powered by vegetables and/or fruits.

This science fair project idea explores whether dry ice will cool a beverage faster than wet ice.

Does nail polish really slow the growth of nails? Explore in this science fair project idea.

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

In this science fair project, students examine how the flow rate in a stream affects the growth of aquatic plants.

This project explores the interaction between air pressure and playing surface in determining a basketballâs bounce.

This science fair project idea explores how length affects the weight a bridge can hold.

This cool electricity project teaches kids how connecting batteries in series vs. parallel circuits can contribute to different levels of voltage and amperage.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

Find a mathematical relationship between the intensity of a sound wave and distance from the sound source. Use a pedometer and a sound level meter.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

Check out this cool science fair project idea to explore the relationship between pulse rate and blood pressure in healthy people.