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Plate Tectonics Study Guide
Terms in this set (19)
Alfred Wegener is the scientist who created this idea
were discovered during naval mapping of the ocean floor
scientists discovered that the oldest ocean floor was farthest from the mid ocean ridges
Deep Ocean Trenches
formed at subduction zones
Islands arcs run parallel to deep ocean trenches
are the gap between mid ocean ridges wher the molten rock rises
What are the 5 different types of evidence Wegener used to support his continental drift hypotheses?
1. Mountain Ranges 2. fossils 3. Coal fields 4. Glacier Climates and gourges 5. The continents seem to fit together
What is the driving force that pushes plate tectonics?
Convection in the mantle
In areas where mantle rock would rise to form new crust, What type of land form would be found where this happens?
A. mid-ocean ridge
In areas where mantle rock would have a downward movement, plates would sink below less dense plates. What type of landform will be found at this location?
Deep ocean trenches
A single rising hot spot of mantle rock would create a mantle plume causing rock to rise. What type of landform will be created at this location?
At what type of plate boundary is new crust created?
Divergent plate boundaries
At what type of plate boundary is old crust destroyed?
Convergent plate boundaries
At what type of plate boundary is crust neither created or destroyed?
transforms fault boundaries
When 2 continental plates collide, neither plate will sink. Both plates will bend and buckle. What type of landform is created when this happens?
When 2 oceanic plates converge, the sinking crust becomes hot and begins to melt it will rise and push through the crust. What type of landform is created when this happens?
Volcanic island arcs
When an oceanic plate and a continental plate collide, the oceanic plate will sink, melt and then rise to the surface. What type of landform is created when this happens?
List the 2 types of lithospheric plates
1. oceanic 2. continental
List the 3 types of plate boundaries
1. divergent plate boundaries 2. convergent boundaries 3. transform fault boundaries
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