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The Rock Cycle

20 minutes 21 seconds

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Videos are generally available for preview to non-members as short clips. Limited full-length titles are also available. Log In to view the full length title.

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Three people sitting on ground looking at rocks. Caption: Geologists divide sedimentary rocks into three main types…

Rocks, a naturally formed material that covers the earth, are classified by their origin. Discusses rocks' composition, three types (igneous, sedimentary, and metamorphic), how they are formed, and how they are changed. The rock cycle is a slow, ongoing process.

Media Details

Runtime: 20 minutes 21 seconds

Topic: Science
Subtopic: Geology
Grade/Interest Level: 7 - 10
Standards:

Release Year: 1998
Producer/Distributor: Educational Activities
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Map of Alaska with Anchorage displayed. 1964 Epicenter indicated on coastline in bay adjacent to Anchorage. Caption: The epicenter was in Prince William Sound

Dry, brown grass and brush with crumbling rocks throughout and a flat-topped rocky hill in the background. Caption: punctuated by hills, badlands, and bluffs --

Person walking through low hills of green and brown shrubs and rock strewn in red soil. Caption: through the Texas Panhandle.

Illustration of a man sitting at a desk, looking off into the distance at nothing. Caption: Maybe the continents drifted apart.

A subduction zone. In a subduction zone oceanic plate dives beneath the continental plate. Contact at time equal zero. G P S at time equals zero. Caption: Megathrust earthquakes most commonly occur

Rolling two-peaked hill and valley covered in trees. Caption: Inexplicably, Capulin Volcano is tree covered,

A tree lined river with steep banks on one side. Caption: you have groundwater that flows into the river

Cave with stalactites and stalagmites in light brown rock. Caption: and great cathedrals of rock

Rolling brown foothills ending in San Francisco Bay with the Golden Gate bridge in the foreground. Caption: This movement is called an earthquake.

Still image from: Core Geology

Viewer Comments

Anonymous (LONG BEACH, CA)

November 9th, 2015 at 10:07 AM

This is my favorite in this series of rock movies as it describes in detail the processes involved to change each rock.