This is the mechanism (what causes) the plates to move
What are CONVECTION CURRENTS in the mantle?
Where two plates meet; earthquakes & various landforms happen here
What is a PLATE BOUNDARY?
The Himalayan mountains are the result of a ___________________________ boundary.
What is convergent collision boundary?
A number of rigid, but moving, pieces of Earth's surface
What are TECTONIC PLATES?
The mid-ocean ridge is a landform at a ____________________ boundary and ___________________ occurs here where new ocean floor is formed.
What is divergent boundary; sea-floor spreading
Oceanic crust sinks below continental crust because oceanic crust is...
What is MORE DENSE?
This landform occurs when two continental plates collide together.
What is FOLDED MOUNTAINS?
_________________ are a result from the build up of stress at every type of plate boundary.
What is EARTHQUAKES?
States that youngest rocks of ocean floor are at divergent boundaries, moving outward
What is seafloor spreading
Supercontinent that existed around 250 million years ago
What is PANGAEA?
Volcanoes & ____________ form at convergent subduction boundaries.
What are TRENCHES?
When one plate is pushed under another because of differences in density.
What is SUBDUCTION?
Continental Drift Theory was not accepted because it did not explain this
What is HOW the continents moved?