In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

This science fair project idea produces consumable fresh water from salt water through desalination.

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

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

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

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

This fun middle school science fair project idea helps student discover the concepts behind deep sea diving and how Cartesian divers work.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

The buoyant force of water explains why some objects float in water. But why do some objects sink? Find out in this physics experiment and learn about density.

How is NASA able to launch something into orbit around the Earth? Learn about the relationship between gravity, speed, and orbit in space in this cool project!

What if the shape of the Earth weren't spherical? How does its shape affect our gravity, climate, and tides? Model these questions in this cool project!

Kids build a rainforest food web to explore trophic levels in this cool science fair project for 4th grade.

The projects describes the correlation between Gravel Run and Centreville Landing in terms of pH, dissolved oxygen, turbidity, and temperature.

The objective of this project is to evaluate whether a top will spin at different rates during different phases of the moon.

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

The objective of this science project is to examine the factors that affect the dispersion of oil in water, including water agitation.

Is there more air particulate matter in an urban or rural environment? Test your knowledge with this science fair project.