Plate Tectonics provides geology with a comprehensive theory that explains how the Earth works.
This site provides information on the different biomes of the Earth. There are links to related information and other topics.
Learn about volcanoes and apply what you know to making decisions about how to handle real world situations. You will find lots of supporting materials for these activities.
This is a nice explanation of geologic time and Earth's major eras. Although this site is designed for younger students, it is mostly text with few images.
Written for younger students, this site explains biodiversity and links to easy to understand explanations of species and genetic diversity.
This one-page explanation of the rock cycle contains a very helpful diagram and useful explanatory notes. Site explains how rocks are made and broken down.
This is a very brief overview of the water cycle, but it does have a nice graphical representation.
Discover the tropical savannah biome! Here you can learn what a tropical savannah is, where such places exist, and the animals and plants that can be found there.
This tutorial looks at carbon dioxide in the atmosphere and how changes can impact wheat production in Kansas.
This site is full of information and activities to help learn about the Florida Everglades, a unique wetland environment, and its future.
Explores the historical events that took place between the United States and the USSR to bring about the political division of Korea on the 38th parallel into north and south after the end of World War II.
Use this site to learn about the millions and trillions of gallons of water that covers the earth, known as the hydrosphere.
At this site from the NASA Classroom of the Future, you can learn about the many different layers of the earth and see what the earth would look like cut in half.
Information and activities enhance student exploration of wildfire ecology and human interventions in Yellowstone National Park, and provide a background for land use management studies.