Plate Boundaries

Front

Continental plates are ______ dense and ________ than ocean plates.

Back

less; thicker

Front

The process where oceanic crust slides under another plate and is melted is called ___________.

Back

subduction

Front

Two plates spread or move apart at what boundary?

Back

Divergent

Front

What happens at a convergent plate boundary?

Back

Plates collide, and one plate may be forced under another.

Front

What is a transform boundary?

Back

A boundary where two plates slide past each other.

Front

What is seafloor spreading?

Back

The process by which new oceanic crust is formed at divergent boundaries.

Front

What is the result of subduction?

Back

Formation of deep ocean trenches and volcanic arcs.

Front

What is the difference between oceanic and continental crust?

Back

Oceanic crust is denser and thinner than continental crust.

Front

What geological features are commonly formed at divergent boundaries?

Back

Mid-ocean ridges and rift valleys.

Front

What is a tectonic plate?

Back

A large slab of Earth's lithosphere that moves and interacts with other plates.