Plate Tectonics

Front

What is the denser crust that subducts under the continental crust?

Back

Oceanic crust.

Front

What type of plate boundary occurs when two plates move away from each other?

Back

Divergent Boundary.

Front

What happens at a subduction zone?

Back

The denser oceanic crust subducts under the less dense continental crust.

Front

What was the name of the supercontinent that existed 200 million years ago?

Back

Pangea.

Front

What is the lithosphere?

Back

The lithosphere is made of solid rock.

Front

What is the asthenosphere?

Back

The asthenosphere is more flexible hot rock that moves.

Front

What is a convergent boundary?

Back

A plate boundary where two plates move towards each other.

Front

What is a transform boundary?

Back

A plate boundary where two plates slide past each other.

Front

What geological features can form at divergent boundaries?

Back

Mid-ocean ridges and rift valleys.

Front

What geological features can form at convergent boundaries?

Back

Mountains, deep ocean trenches, and volcanic arcs.