This fun middle school science fair project idea explores the process of respiration and determines whether boys and girls have the same lung capacity.

Use applied math to model orbital eccentricity in this cool science fair project for 7th grade.

This science project examines the effectiveness of various types of laundry detergents on stains trapped on a white handkerchief.

Science fair project in which you will stage an election campaign to determine whether people are more swayed by a positive ad or negative ad.

Create a double-slit interference out of cardboard. Produce an interference pattern that demonstrates the wave and particle characteristics of light.

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

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

Kids will love making clouds and learning how to make a water cycle model in this fun science fair project idea that explores evaporation and precipitation.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

Can cells be frozen? This science fair project provides information to answer this question.

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

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.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

Science fair project that determines whether moths are attracted to one color of light more than others.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

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

Make stunning pendulum waves and learn the math behind the patterns generated with this cool and easy science project.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

This science fair project idea attempts to train a worm to complete a simple maze in order to find out if worms can learn and remember.

Measure the effectiveness of detergent containing a UV-absorbing compound in blocking UV-A radiation. Use black light and UV detecting beads.

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).

This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

This science experiment tests if dog saliva can really help heal wounds.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.