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Science

Results: 41 Videos

Soil Formation...
Soil Formation...

On the Big Island of Hawaii, lava from volcanoes forms new rock. Physical and chemical processes contribute to the weathering of rock into sediment and soil. View Video

Spreading and Subducting Can Move Continents
Spreading and Subducting Can Move Continents

The opening of the Atlantic Ocean between two tectonic plates at a spreading ridge separated the two continents. View Video

Spreading Ridge Volcanoes
Spreading Ridge Volcanoes

Spreading ridge volcanoes form in the deep sea where two plates are moving apart. View Video

Subduction Zone Volcanoes
Subduction Zone Volcanoes

Subduction zones are where rock slides under less-dense rock. Magma, enriched with highly pressurized steam and CO2, rises to the surface under subduction boundaries, making volcanoes. View Video

The Age of the Appalachian Mountains
The Age of the Appalachian Mountains

The Appalachian Mountains are compared to the much higher, but younger, Himalayas. View Video

The Role of Sand, Silt, and Clay Components in Soil...
The Role of Sand, Silt, and Clay Components in Soil...

Soil composition is important in determining its qualities such as flow rate, which can be demonstrated by pouring water through containers. View Video

Two Different Kinds of Volcanoes
Two Different Kinds of Volcanoes

Scientists Chuck Blay and Dave Sherrod compare Hawaiian volcanoes to Mt. Saint Helens. View Video

Types of Fossils
Types of Fossils

The formation of two types of fossils are shown and discussed: an imprint in a rock and minerals replacing the shells of dead organisms. View Video

Volcanic Gases
Volcanic Gases

The gases that make up our atmosphere were released during volcanic eruptions in both the past and present. View Video

Volcanoes—Sources and Types of Lava
Volcanoes—Sources and Types of Lava

Scientists describe how mantle rock melts into magma and how the more buoyant, liquid magma floats toward the Earth's surface. View Video

Where Does the Sediment on a Beach Come From?
Where Does the Sediment on a Beach Come From?

Sediment on a beach contributes to the vast continental shelf offshore over time, but this does not explain where the sediment came from. View Video


Results: 31-41 of 41