What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

Examine the influence of the phase of the moon on moisture capillarity in garden soil. Measure and record the depth at which water is first detected.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

Science fair project that creates fog using bottles of hot and cold water.

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

This science fair project focuses on the use of a conductivity device that will determine if a substance dissolved in water can or cannot conduct electricity.

This baseball science fair project explores the concept of an object's center of percussion to determine if the "sweet spot" has a scientific basis.

This project examines the concentration of dissolved oxygen in water, with and without oil.

This experiment will explore the possibility of a connection between lunar cycles and how humans are affected.

Free science fair project idea that examines the ergonomics of your environment. Redesign your living space to be better suited to your lifestyle.

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

Science fair project that examines the relationship between fluid flow rate, pressure, and resistance.

Multiple-choice test questions can be confusing. Here's a toolbox of tricks and strategies to help your teen become a multiple-choice master.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

This science fair project idea quantifies exactly how accurate the cricket thermometer is.

This science fair project idea determines the probability of a coin landing heads or tails.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Determine how salinity affects the circulation of warm and cold water. Note whether the warm water mixes or forms a layer with cold water.

Science fair project about different digital image file types, compares different encoding algorithms used to compress the data.

Free science fair project idea examining how different types of water affect plant germination and growth.

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

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

The objective of this science fair project is to examine the cleanliness of salad preparation techniques.

Evaluate the ability of a biodegradable dish detergent to increase the penetration of water in hydrophobic soils.

Check out this fun science fair project idea for middle school students to learn about the effects of temperature on the density of a gas such as air.

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

Science fair project idea that measures fuel efficiency in cars. Calculate cost per mile by comparing fuel cost and consumption data.