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Science

Results: 9 Videos

A Volcanologist Dances on Lava
A Volcanologist Dances on Lava

On the Big Island of Hawaii, Volcanologist Dave Sherrod treads on the newest rock on the planet to show how quickly lava hardens when it emerges at the surface. View Video

Demo of Shield Volcanoes versus...
Demo of Shield Volcanoes versus...

A demonstration of viscosity and gas content of different types of magmas using chocolate syrup, mayonnaise, and seltzer water. View Video

Hawaii Is a Hot Spot Volcano
Hawaii Is a Hot Spot Volcano

The hot spot below Hawaii provides evidence for plate movement: as the Pacific Plate moves over the hot spot, it creates a string of islands. 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

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

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


Results: 1-9 of 9