Plate Tectonics and Landforms

Front

What is a volcano?

Back

An opening on the Earth's crust through which hot molten rock flows out from deep inside the Earth.

Front

What do tectonic plates float on?

Back

The asthenosphere.

Front

Who developed the concept of sea-floor spreading?

Back

Harry Hess.

Front

What is a plate boundary?

Back

The place where two continents meet and interact.

Front

What do tectonic plates consist of?

Back

Both continental and oceanic crust.

Front

What is the lithosphere?

Back

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

Front

What is the mantle?

Back

The layer of the Earth between the crust and the core, composed of semi-solid rock.

Front

What is continental drift?

Back

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

Front

What are tectonic plates?

Back

Large sections of the Earth's lithosphere that move and interact with each other.

Front

What is a fault line?

Back

A fracture in the Earth's crust where blocks of land have moved past each other.