Continental Drift and Crust Types

Front

What are the two types of crust?

Back

Continental and oceanic.

Front

The point where one plate slides beneath another is known as the ______________.

Back

subduction zone.

Front

Where would the oldest rock be found near a mid-ocean ridge?

Back

The oldest rock would be found farthest from the ridge, typically labeled as 'O' in diagrams.

Front

What type of volcanoes form from wide thin layers of lava, like the ones in Hawaii?

Back

shield volcanoes.

Front

Who is the German Scientist that came up with the theory of the Continental Drift?

Back

Alfred Wegener.

Front

What is the theory of Continental Drift?

Back

The theory that continents have moved over geological time and were once joined together.

Front

What is the lithosphere?

Back

The rigid outer layer of the Earth, consisting of the crust and upper mantle.

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 mid-ocean ridge?

Back

An underwater mountain range formed by plate tectonics.

Front

What is subduction?

Back

The process by which one tectonic plate moves under another and is forced into the mantle.