continental drift seafloor spreading theory of plate tectonics · plate tectonics.notebook 1...
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plate tectonics.notebook
1
September 12, 2013
Nov 6-09:37
continental driftseafloor spreading
Theory of Plate Tectonics
asthenosphere
Jan 4-9:05 AM
plate tectonics.notebook
2
September 12, 2013
Nov 6-09:47
If the seafloor is spreading, why isn't the earth getting bigger and bigger?
Nov 6-10:01
Divergent Boundary
are grinding past one another horizontally
California
plate tectonics.notebook
3
September 12, 2013
Nov 6-09:52
2 oceanic plates
oceanicsubductedcontinental +
oceanic plates
Sep 9-12:09 PM
Basal Drag/Slab Pull: sinking plates pull the plate with them back into the earth's mantle.
Ridge Push: rising mantle material at mid-ocean ridges pushes plates apart, toward subduction zones.
plate tectonics.notebook
4
September 12, 2013
Nov 11-9:56 AM
Nov 7-09:11
Features Caused by Plate Tectonics:
* 1 Side moves down relative to the other* Rift Valleys & Mid-Ocean Ridges
plate tectonics.notebook
5
September 12, 2013
Nov 7-09:19
Mountains & Volcanoes:* Compression Forces (convergent)* 2 continental plates = mountain
* 1 continental + 1 oceanic = volcano
Strike-Slip Faults:* Shearing Forces (Transform fault boundaries)* horizontal movement* example: California
Nov 7-09:24
Testing for Plate Tectonics:* Lasers
* Can measure as little as 1 cm/year
plate tectonics.notebook
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September 12, 2013
Nov 2-8:58 AM
1. At a transform boundary, plates move:
Nov 2-9:01 AM
2. Seafloor Spreading:
plate tectonics.notebook
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September 12, 2013
Nov 2-9:07 AM
__________ faults
____________ Boundary
Nov 2-9:09 AM
If a volcano happens at a plate boundary, there
must be a _______________ _______!
plate tectonics.notebook
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September 12, 2013
Nov 2-9:17 AM
Sep 11-11:50 AM
1. A ________ material is something that is capable of changing shape w/o breaking.
2. A _____________ is one wher e 2 plates collide.
3. 2 plates separate at a ________________________
4. 2 plates slide by each other at a ___________________
5. The sinking of a denser plate below a more buoyant plate is called __________________
6. _______________ is a consequence of the rising mantle of ocean ridges.
7. ________ is the force produced by the sinking of a plate.
8. ____________ is the theory that Earth's surface is made of slowly moving rock plates.
9. The rigid outermost rock layer of Earth is the _________
10. __________ occurs when ma terial circulates through differences in density.
plate tectonics.notebook
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September 12, 2013
Nov 2-9:48 AM
Nov 2-9:51 AM
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September 12, 2013
Nov 2-9:53 AM
Dec 30-12:00 PM
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September 12, 2013
Jan 6-8:52 AM
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