Vocabulary
A number of rigid, but moving, pieces of Earth's surface
What is tectonic plates
Sea-Floor spreading is caused by
What is Divergent Boundaries
Plates moving towards each other
What are Converging Boundaries
How plate tectonics are moved
What are convection currents in the upper mantle
The "middle mantle"
What is the Athenosphere
Plate boundary that causes a volcano
What is Convergent Boundaries
Plates sliding past one another
What are Transform Boundaries
Layer of Earth that the plates move on
What is the Athenosphere
The theory that all continents are fragments of Pangaea now drifting apart
What is the Continental Drift Theory
Causes mountains to form
What is Convergent Boundaries
Plates moving away from one another
What are Divergent Boundaries
Some plates are moving ___________ than the ___________ underneath
What is faster; currents
Supercontinent, all plates together
What is Pangea
Plate boundaries that cause faults
Divergent and Transform
When one plate sinks below another
What is subduction
Where tracking of plate tectonic movement takes place