Plate Boundaries

Front

What are the names of the two continents that started drifting apart?

Back

Laurasia and Gondwanaland.

Front

When did Pangea first start to break apart?

Back

175 million years ago.

Front

What is the Continental Drift Theory?

Back

The idea that Earth's continents moved apart from a single large continent called Pangaea.

Front

What is a divergent boundary?

Back

A boundary where two tectonic plates drift apart.

Front

What is a transform boundary?

Back

A boundary where two tectonic plates slide past each other.

Front

What is a convergent boundary?

Back

A boundary where two tectonic plates collide.

Front

What is Pangaea?

Back

A supercontinent that existed during the late Paleozoic and early Mesozoic eras.

Front

What geological features are formed at divergent boundaries?

Back

Mid-ocean ridges and rift valleys.

Front

What geological features are formed at convergent boundaries?

Back

Mountain ranges, deep ocean trenches, and volcanic arcs.

Front

What is subduction?

Back

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