Continental Drift
Sea-Floor Spreading
Theory of Plate Tectonics
Theory of Plate Tectonics Cont.
Mechanisms of Plate Motion
100
Theory: The continents have once been joined to create a super continent called
What is Pangaea?
100
A long curved Valley along the edges of some ocean basins
What is deep-ocean trenches?
100
the broken pieces of the lithosphere
What is Plates?
100
Range of volcanic mountains that are produced by the Subduction of the oceanic lithosphere
What is Continental Volcanic Arc?
100
__________________ provides the basic driving forces for plate motions
What is Convection Currents?
200
Theory: There were fossils of Mesosaurus in Africa and South America but they couldn't have swam over is a theory called
What is Matching Fossils?
200
Sonar stands for what
What is Sound Navigation and Ranging?
200
When two plates move apart
What is Divergent Boundaries?
200
Where most of the divergent boundaries are spreading
What is the crest of the mid-ocean ridge?
200
A continuous flow of that occurs in a fluid because of different densities
What are Convection Currents
300
Theory: Ice Sheets that once were in the southern Hemisphere are now in and around the Equator. Theory called
What is Ancient Climate?
300
A long mountain range that extends the length of the ocean floor
What is Mid-Ocean Ridge?
300
When two plates move together
What is Convergent Boundaries?
300
Chain of small volcanic islands
What is Volcanic Island Arc
300
The Type of Force that pulls old ocean lithosphere down into the mantle
What is Slab-Pull
400
German Scientist who noticed Pangaea
Who is Alfred Wegener
400
The process that the ocean floor returns to the mantle and sinks beneath a deep ocean trench
What is Subduction?
400
When Earth's lithospheric plates move relative to each other
What is Plate Tectonics?
400
The three types of plate Boundaries
What is Divergent, Convergent, Transform fault
400
The Type of Force when ocean lithosphere slides down the Asthenosphere that is elevated near mid ocean ridges
What is Ridge-Push
500
The people rejected________________ because he couldn't describe the mechanism that could move the continents
What is Wegener's Hypothesis?
500
less than 180 million years old
What is the age of the ocean floor?
500
When plates rub up against each other.
What is Transform Fault Boundaries?
500
Another term for Transform Fault
What is Strike-Slip Fault?
500
A rising column of hot solid mantle rock
What is Mantle Plume?
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