Plate Tectonics

Front

What is Plate Tectonics?

Back

The theory that explains the structure and movement of the Earth's lithosphere, which is divided into tectonic plates that float on the semi-fluid asthenosphere.

Front

What is the lithosphere?

Back

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

Front

What is the asthenosphere?

Back

The semi-fluid layer of the mantle beneath the lithosphere, where convection currents occur.

Front

What causes tectonic plates to move?

Back

Convection currents in the asthenosphere drive the movement of tectonic plates.

Front

What is a transform boundary?

Back

A tectonic plate boundary where two plates slide past each other, causing earthquakes.

Front

What is a convergent boundary?

Back

A tectonic plate boundary where two plates collide, leading to mountain formation or subduction.

Front

What is a divergent boundary?

Back

A tectonic plate boundary where two plates move apart, leading to the formation of new crust.

Front

What is subduction?

Back

The process where one tectonic plate is forced under another, often leading to volcanic activity.

Front

What evidence supports the theory of continental drift?

Back

Fossil, rock, and climate data support Wegener's theory of a supercontinent.

Front

What is a fault?

Back

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