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12 Cards in this Set

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  • Back
breaks in Earth's crust where rocks have slipped past each other-form along these boundaries
Scientific Theory
well-tested concept that explains a wide range of observations.
Deep-Ocean Trenches
Deep underwater canyons. A deep-ocean trench forms where the oceanic crust bends downward. Subduction takes place here
Divergent Boundary
place where two plates move apart. occur at mid ocean ridge.
Transform boundary
place where two plates slip past each other, moving in opposite directions. Earthquakes occur here
Rift Valley
Deep valley that forms along the divergent boundary
process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle.
Covergent Boundary
place where two plates come together is called covergent boundary. The result is a collision
The lithosphere is broken down into separate plates. They fit together along the cracks in the lithospere.
Plate Tectonics
Geological theory that states that pieces of Earth's Lithosphere are in constant slow motion, driven by convection currents in the mantle. The theory explains the formation, movement, + subduction of Earth's Plates
Sea Floor spreading
Process that continually adds new material to the ocean floor.
Harry Hess
studied the mid-ocean ridge