4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

This science fair project idea demonstrates sonar mapping of the ocean floor.

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

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.

Store seeds under three different environmental conditions. Plant seeds in carefully marked groups, watch them grow. Compare results.

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

This science fair project examines whether ocean water can be made safe to drink.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

Choose a timeline to live without technology. Keep a journal of all the issues encountered. What are the benefits and cons of modern technology?

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

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

The purpose of this science project is to determine which stimulus, gravity or water, will cause the greatest growth response in a plant.

This fun science fair project idea helps students learn how acid rains are formed and explore how acid rain damages the environment.

How do organic materials become soil? This science experiment measures what materials biodegrade.

This study observes plants, insects and an animal living in proximity to a known source of EMF.

The objective of this experiment is to evaluate the effects of acid rain on plants.

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

In this science fair experiment about recycling, demonstrate how the wax from a candle can be reused to make another candle.

This project explores how and how much one family can reduce the amount of garbage they accumulate over a three month period.

This science project challenges students to take learned information about weather and climate control and apply it to come up with creative ideas of their own.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

Science fair project that explores the natural process of limestone formation.

Design a livable building that functions without electricity. Consider necessities, comforts and entertainment. Build a scale model of your design.

This science fair project idea compares biodiversity between drops of water.

This science fair project challenges students to research vortices occurring in nature and then create their own vortex.

This science fair project explores different types of endangered frogs, and why some are endangered while others are not.

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

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

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