Plate Boundaries

Front

Who proposed the Plate Tectonics Theory?

Back

Harry Hess

Front

What is a divergent boundary?

Back

A divergent boundary is where two tectonic plates drift apart.

Front

When did the Earth's continents stop breaking apart and coming together?

Back

The Earth's continents have not stopped; they are continually breaking apart and coming together.

Front

What type of crustal features form at a divergent boundary?

Back

At a divergent boundary, a rift or a ridge forms.

Front

What did Harry Hess measure when he was in the navy?

Back

Harry Hess measured the surface of the ocean floor.

Front

What is a convergent boundary?

Back

A convergent boundary is where two tectonic plates collide.

Front

What geological features are formed at convergent boundaries?

Back

Mountains, trenches, and volcanic arcs are formed at convergent boundaries.

Front

What is a transform boundary?

Back

A transform boundary is where two tectonic plates slide past each other.

Front

What is the significance of the Mid-Atlantic Ridge?

Back

The Mid-Atlantic Ridge is a divergent boundary where new oceanic crust is formed.

Front

What is subduction?

Back

Subduction is the process where one tectonic plate moves under another and sinks into the mantle.