|
|
|
|
|
|
|
| Description: |
Although it feels solid and hard beneath our feet, the outer surface of the Earth is a thin crust of fragile rock, fractured like the cracked shell of an egg. The pieces of the shell are Earth's tectonic plates -- there are 12 major ones -- and they float across a layer of soft rock like rafts in a stream, their motions driven by forces generated deep in the Earth. At their boundaries, the plates spread apart, converge, and slide past one another. |
|
| Keywords: |
|
tectonics, earth's crust
|
|
|
Browse in Categories:
|
|
|
|
| More information about this material: |
Primary Audience:
Grade School,
Middle School
Mobile Compatibility:
Not specified at this time
Technical Requirements: Web Browser, video.
Language:
English
Cost Involved:
no
Source Code Available:
unsure
Accessiblity Information Available:
unsure
Copyright:
yes
Creative Commons:
unsure
|
|
 |
About this material: |
Peer Reviews (not reviewed)
Workflow status (Not triaged)
Comments (none)
Learning Exercises (none)
Personal Collections (none)
Accessibility Info (none)
|
|
|
| |
Add your own: |
|
|
| |
|
|
|
|
| |
| |
|
