Flashcards
Plate Tectonics
Cards in this deck (10)
- 1What are plate tectonics?The study of how and why continents move through time.
- 2What is the lithosphere?All crust + uppermost mantle
- 3What is asthenosphere?Relatively thin viscous layer in upper mantle
- 4What are tectonic plates?Large, moving, broken-up pieces of the lithosphere. (pacific is largest [thin])
- 5What is the name of the most recent super-continent?Pangaea (300 Ma)
- 6What are the three types of plate movement?Divergence
Convergence (subduction and collision)
Transform movement - 7What are mid-ocean ridges?Divergence locations of where the plates seperate. (mid-atlantic)
- 8What is subduction?One plate dives below another. Can cause volcanism.
- 9What is collision?Two plates crash into each other. Can form mountains. (Himalayans. Alps)
- 10What is transform movement?Two plates slide past each other. (San andreas fault)