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.

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.

Study the effects of wind and temperature on evaporation. Place wet sponges in different environments, check at regular intervals, track time required to dry.

Blend science and math to explore a very important first grade social studies question: does our planet contain more land or more water?

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

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

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

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

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

Help your curious kid cut through the clutter and collect the facts with a simple and fun science foldable.

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

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

Have fun with bubbles and find out why there are bubbles in your tap water in this cool science fair project idea.

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