This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

In this activity, your student will be invited to build a chair out of building blocks that is designed to meet the specific size and shape of a small doll or toy figure.

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.

This science fair project idea demonstrates that plants give off water.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

This science fair project teaches students about wilting and browning of salad greens.

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

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Test whether plants can grow without sunlight and water.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

This science fair project teaches students the differences between fruits and vegetables.

This science fair project idea determines which method of hand cleansing is the most effective.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Do different types of oil mix or stack? Find out in this science fair project idea!

Science fair project that examines condensation and the conditions needed in order for dew to form.

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