Front

The place where two plates come together is known as a _______

Back

convergent boundary.

Front

What is the realization associated with the discovery of seafloor spreading?

Back

The crust of the oceans is very young relative to the age of the crust of the continents.

Front

What are the two types of crust?

Back

continental and oceanic.

Front

What is a plate boundary where two plates move away from each other?

Back

Divergent boundary.

Front

What is it called when two plates move past each other in opposite directions?

Back

transform boundary.

Front

Define 'transform boundary'.

Back

A plate boundary where two plates slide past each other.

Front

Define 'divergent boundary'.

Back

A plate boundary where two plates move away from each other.

Front

Define 'convergent boundary'.

Back

A plate boundary where two plates collide.

Front

What is seafloor spreading?

Back

The process by which new oceanic crust is formed at mid-ocean ridges.

Front

What is the significance of oceanic crust being younger than continental crust?

Back

It indicates that oceanic crust is continuously being created and destroyed.