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

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.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

This science fair project examines how seeds hitchhike on animals and clothing.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

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

This science fair project investigates why the number of visible stars changes from place to place.

This project determines the age of a tree using a growth factor chart instead of cutting the tree down to count the rings in its base.

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.

This science fair project idea produces varying pitches of sound.

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

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

In this design challenge, your child will create a parachute for a small toy using typical household items.

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

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

This science fair project idea explores whether talking to a plant will help it grow.

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.

This science fair project idea studies which kind of rock (sedimentary, igneous, or metamorphic) is most damaged by frozen water.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

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

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

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

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