ESS2.B Flashcard

Front

What is continental drift?

Back

The theory that continents have moved over geological time and were once joined together in a single landmass.

Front

What evidence supports the theory of continental drift?

Back

Similar fossils found on different continents.

Front

What type of plate boundary is most likely to produce a deep ocean trench?

Back

Convergent boundary.

Front

What is the primary force that drives the movement of tectonic plates?

Back

Heat from the Earth's core causing convection currents.

Front

How does the age of oceanic crust change as you move away from a mid-ocean ridge?

Back

It becomes older.

Front

What geological feature is formed at a divergent plate boundary?

Back

Mid-ocean ridges.

Front

What happens at a transform plate boundary?

Back

Plates slide past each other, causing earthquakes.

Front

What is subduction?

Back

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

Front

How do tectonic plates interact at convergent boundaries?

Back

They collide and can form mountains or cause earthquakes.

Front

What is the role of convection currents in the mantle?

Back

They drive the movement of tectonic plates.