Erosion and Weathering

Erosion and weathering may be caused by a variety of factors including wind and water. This still collage produced for Teachers' Domain features images of rock, soil, and beach erosion.

Explore Alaska's Volcanoes

In this interactive activity adapted from the University of Alaska, explore four of Alaska's many volcanoes using photographs, computer simulations, and three kinds of satellite images.

The Falls of the Ohio

This video from KET examines one of the largest exposed fossil beds in the world, found at the Falls of the Ohio River, near Louisville, Kentucky.

Farm Solutions to Water Pollution

In this KET video from Common Ground and Cleaner Water, Tribby Vice, a Kentucky farmer, talks about the changes he has made on his farm to protect the water quality of the stream running through his property and the watershed in which he lives.

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Fastest Glacier

In this video segment adapted from NOVA scienceNOW, scientists in western Greenland explain how a glacier there is shrinking and moving faster due to increased melting.

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Field Research on Glacial Change

In this video segment produced by ThinkTV, learn how scientists take measurements in the field to gain an overall understanding of changes in local water supplies, and how they may relate to changes in the mass of nearby glaciers.

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Flood: Farming and Erosion

In this video segment adapted from NOVA, scientists investigate how farming along the Mississippi River impacts floods and what can be done about it.

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Geology of Death Valley

This video segment from NatureScene examines the landforms of Death Valley and how they came to be.

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Geology of North Dakota Badlands

See how the geology of the North Dakota badlands has changed over time in this video segment from NatureScene, featuring the landscape at Theodore Roosevelt National Park.

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Glaciers

Featuring images of glacier formations, this interactive resource adapted from the National Park Service explains what glaciers are, where they are found, how they form, and how they move.

Global Warming Threatens Shishmaref

In this video segment adapted from Spanner Films, visit the Alaska Native village of Shishmaref, and learn how an entire town may be forced to relocate because of warmer temperatures, melting sea ice, and coastal erosion.

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The Grand Canyon: Ancient Mountains

This video segment adapted from NOVA features the twisted and melted forms of the Grand Canyon's oldest rocks, the 1.7-billion-year-old Vishnu Schist.

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The Grand Canyon: How It Formed

This video segment adapted from NOVA uses animation to present the theory of how the Grand Canyon was formed and features rare footage of a phenomenon known as debris flow.

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The Grand Canyon: Its Youngest Rocks

This video segment adapted from NOVA features the youngest rock formations in the Grand Canyon, lava dams, and how they are subject to the eroding power of water.

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The Grand Canyon: The Top Two Rock Layers

This brief video segment adapted from NOVA uses illustrations and the well-preserved footprints of a small reptile to portray the history of the Grand Canyon's top two rock layers.

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Greenland Ice Sheet Project 2: A Record of Climate Change

Using images and graphs, this interactive resource illustrates scientists' efforts to study Earth's climatic history for the last 250,000 years by drilling into the Greenland Ice Sheet and examining ice cores. Adapted from the Wright Center for Science Education, Tufts University.

Hawaiian Coastal Cliffs

This video segment from Nature explains the geologic forces behind the creation of Hawaii’s dramatic shoreline.

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High Altitude Glaciers in the Tropics

While it may seem like a contradiction, glaciers do exist in the tropical latitudes. In this video produced by ThinkTV, learn about tropical glaciers and why scientists are studying them to better understand global climate change.

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How Do Avalanches Form?

In this video segment adapted from NOVA, dramatic footage of avalanches and animations of ice crystals illustrate how a layer of weakly-bonded snow can contribute to a devastating avalanche.

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How The Ohio River Was Formed

This video segment adapted from KET's Where the River Bends demonstrates how climate change and glacier movement during the Ice Ages destroyed the old Teays River and created the Ohio River, Kentucky's northern border.

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