Scientists classify minerals based on a set of physical properties. Each of these properties is described in detail.

Investigate glaciers past and present through this website that explores glaciers found in the National Park Service.

Lesson plan in which students observe and contrast thermal properties of three major greenhouse gases. Using simple, readily available materials, students collect temperature change over time for dry air, water-saturated air, carbon...

Learn more about the hot spot theory developed in 1963 by the Canadian geophysicist J. Tuzo Wilson. Diagrams help you visualize the way hot spots formed geologic structures such as the Hawaiian Islands.

A great resource for explaining and understanding tides. Find out what tides are and why it is so important to monitor them. This is an extensive tutorial followed by a set of review questions. All of the information can be downloaded as...

This site from the U.S. Geological Survey allows you to access detailed images of the continental margin around the United States. There is additional information about the sonar methods used, and a wealth of additional sources listed.

Project Mohole was "the earth sciences' answer to the space program," a project to gain information about the Earth by drilling a hole through the Earth's crust to the Mohorovicic Discontinuity (Moho). This website gives a history of the...

There aren't any glaciers left in Canada's Maritime provinces. All that remains is evidence. Learn about the glacial grooves left behind.

An explanation of radiometric or absolute dating of geological formations based on using the half-life of radioactive elements to figure out how old given rock layers are. A link on the left provides information about relative dating as...

A lab experiment, in a series of experiments, that investigates fisheries. In this lab, students test the effects of fertilizers and other pollutants on a model ecosystem. Students also examine 2 years of ocean color (chlorophyll...

Instructional module focusing on plate tectonics. Discussion includes plates, plate boundaries, and driving forces. Site also includes an interactive practice quiz and links relating to the topic.

In this interactive tutorial, you will learn about the types of weathering and erosion that rocks and landforms undergo. This will lead to a discussion of soil and the types of soil. Lastly, you will learn about mass movements of soil,...

In this interactive tutorial, you will learn about glaciers - rivers of ice. Learn about the features caused by moving glaciers.

Explains what ocean trenches are and why they are important. Includes links to videos, additional articles, and information about some deep-ocean submersibles.

Learn about the task force formed to help the public understand the causes and effects of eutrophication in the Gulf of Mexico.

This site talks about ionic, polar covalent, and non-polar covalent bonding.

Find out about the six major air pollutants. In-depth descriptions of ozone, nitrogen dioxide, particulates, sulfur dioxide, carbon monoxide, and lead are provided.

Definitions and descriptions of a variety of seismic waves such as S, P, Love, and Rayleigh waves, as well as diagrams and speeds.

The U.S. Geological Survey provides descriptions and illustrations for the plate boundaries of the Earth's surface.

In this tutorial, students learn about ionic and covalent bonds and predict which elements will form which type of bond. Includes interactive exercises as well as videos.

Extensive information about glaciers. Tells about the life of a glacier, how they form, how they impact the surrounding areas, and what happens when glaciers stop growing. Includes a photo gallery, and links to scientific research on...

Find out about ocean surface topography and the many contributing factors that continually shape the oceans and its sea levels.

Learn about the safety of drinking water, find information on agencies that oversee our water, and gain access to the current drinking water standards and regulations.

Use this interactive infographic to learn about sources of the main greenhouse gases. Read facts, figures, and statistics about four important gases in the atmosphere.