Plate Tectonics, Earthquakes & Landforms

One side of a fault that is angled diagonally.

A body of magma that has hardened underground.

A German scientist who proposed the theory of continental drift in the early 1900s.

Regions of Earth's crust and upper mantle that are fractured into plates.

An area where magma from deep within the mantle melts and breaks through the crust above it.

The hypothesis that continents move across the Earth's surface over geological time.

The sudden release of energy in the Earth's crust that creates seismic waves.

A fracture in the Earth's crust along which movement has occurred.

In a normal fault, the hanging wall moves down relative to the footwall; in a reverse fault, the hanging wall moves up.

The point within the Earth where an earthquake originates.