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CHSCheyScienceCh1S5

QuestionAnswer
What are the types of plate boundaries? 1. divergent 2. convergent 3. transform
Describe what happens when: Two plates carrying oceanic crust collide The plate that is more dense dives under the other plate and returns to the mantle.
Describe what happens when: Two plates carrying continental crust collide The plates crash head-on, forming mountain ranges from the collision.
Describe what happens when: A plate carrying oceanic crust collides with a plate carrying continental crust The oceanic plate begins to sink and plunges beneath the continental plate.
Explain what force caused the movement of the continents from one super-continent to their present locations The convection currents under the asthenosphere push the seafloor along with the continental plates away from the mid-ocean ridges.
Scientific theory A well-tested concept that explains a wide range of observations.
Faults breaks in Earth's crust where rocks have slipped past each other.
Rift-valley a deep valley on land that forms along a divergent boundary.
Plate tectonics the geological theory that states that pieces of Earth's crust are in constant, slow motion
A Canadian scientist who made the theory of plate tectonics J. Tuzo Wilson
plates sections of the lithosphere that slowly move over the asthenosphere, carrying pieces of continental and oceanic crust
What does the theory of plate tectonics explain? Explains the: -formation -movement -subduction of Earth's plates
What do plates do that produce changes in Earth? -collide -pull apart -grind past each other
Transform boundary place where two plates slip past each other, moving in opposite directions. -earthquakes happen along transform boundaries
divergent boundary place where two plates move apart, or diverge. -rift-valleys form along divergent boundaries -most divergent boundaries occur at mid-ocean ridge
What determines what plate sinks or comes out on top? density
convergent boundary place where two plates come together, or converge.
Created by: nyxshadow
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