Courtesy of Rex Pe via Flickr

Geology Lessons
Look into the depths of the Earth center and learn about the fused nucleus of our planet. What is it that causes earthquakes and volcanoes? If you need to know what the Earth is made up of, then this it is the place for you.

The Dirt on Soil
We know less about life in the earth under our feet than we do about the far side of the moon. Yet every plant and animal you can think of depends on this vast hidden ecosystem.

Lessons about Water and The Hydrosphere
We are surrounded by water. Three fourths of the earth is water, our cities and towns are surrounded by streams and rivers, and water falls from the sky. Learn about the water cycle, how water moves from the sky to the rivers to the ocean, and returns to the sky. And learn about underground and the marine water.

Lessons about Ecosystems
When you study a specific area (as your back yard) and the form in which the plants, animals (including us!), the Earth, and water work together to maintain life, you are studying ecosystems. Enter this site in order to learn how the different parts of the ecosystem work together.

Lessons about the Biosphere
The scientists call the world where we live, with all of the ecosystems, the biosphere. It is where trees, insects, and animals live. It is the place where all of the spheres of the planet work together. This site will teach you how the air, the water, and the Earth interact in order to maintain Earth’s life through the ecosystem.

Lessons about the Atmosphere
Learn about the gases that compose the atmosphere, how one protects the Earth and creates the oxygen that we breathe and the carbon dioxide that plants need for photosynthesis. This wonderful site has all the information that you need for your assignments on the atmosphere.

Lessons about the Climate
Where is it hot in one place and cold in another? Learn how the climate works and why it changes in the different parts of our planet.

The Science of the Climate: Extreme climate
“The warmest day of the year" and "The storm of the decade" are all too common in newspapers around the today world. Learn about extreme climate, how it is generated, and the science to understand how it will act later.