Plate Boundaries

Front

Ocean plates are _______ dense and _______ than continental plates.

Back

more; thinner

Front

What kind of plate boundary is shown here?

Back

convergent

Front

Two plates come together or collide at what boundary?

Back

Convergent

Front

Two plates spread or move apart at what boundary?

Back

Divergent

Front

How do scientists know the speed and direction of the tectonic plates?

Back

GPS

Front

What is a tectonic plate?

Back

A massive, irregularly shaped slab of solid rock that makes up the Earth's lithosphere.

Front

What is a divergent boundary?

Back

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

Front

What is a convergent boundary?

Back

A tectonic plate boundary where two plates collide or move towards each other.

Front

What is a transform boundary?

Back

A tectonic plate boundary where two plates slide past each other horizontally.

Front

What geological features are commonly formed at convergent boundaries?

Back

Mountains, deep ocean trenches, and volcanic arcs.