Vocabulary
Divergent Boundary
the boundary between two tectonic plates that are moving away from each other
Subduction
is the process by which denser oceanic lithosphere sinks back into the asthenosphere to melt and become magma
Who proposed the theory of Continental Drift?
Alfred Wagner
Super-continent that existed 200 million years ago
Pangea
What big fault lays on California?
San Andreas
Convergent Boundary
the boundary formed by the collision of two tectonic plates
Transform Boundary
the boundary between tectonic plates that are sliding past each other in opposite directions
What is the plate tectonic theory?
theory that Earth's lithosphere is divided into tectonic plates
What plate does Russia sit on top of?
Eurasian Plate
What is the liquid part of the core called?
Outer core.
Boundary
a place where two tectonic plates meet
Faults
the surface along which rocks break and slide past each other
What did Harry Hammond Hess do?
Theory of sea floor spreading, contributed to plate tectonic theory.
What landform is in the middle of the Atlantic Ocean?
Mid Atlantic Ridge
What causes the plates to move?
Convection currents.
Lithosphere
Crust and the uppermost part of the mantle
Ocean Trench
a long narrow steep-sided depression in the earth's oceanic crust
How did they prove the continents move?
The fossil record, seafloor spreading, and magnetic bands.
This event can happen at all plate boundaries
Earthquakes
Divergent plate boundaries create these:
Trenches and Volcanos
Asthenosphere
region below the lithosphere on which the tectonic plates move
Hotspot
Happens when a magma plumes rises to the surface, causing a volcano
What phenomenon occurs at mid-ocean rifts that pushes the plates apart?
Seafloor spreading
What is the difference between a law and a theory?
Theories explain why or how, laws give a fact usually mathematical.
What are the largest mountains created at a convergent plate boundary?
Himalayas.