Structure of the Earth

Molten rock rises up along

Fracture in the Earth's surface.

When slabs of rock are both pushed and pulled, causing rocks to slide past one another.

When slabs of rock are pulled apart.

The theory that all continents are fragments of Pangaea now drifting apart.

Trembling of the ground that occurs when rock beneath the surface breaks.

The outer shell of Earth that extends to a depth of 100km.

Forms when two lithospheric plates come together.

When slabs of rock are pushed together.

A number of rigid, but moving, pieces of the Earth's surface.

The fastest seismic waves.

Forms when two lithospheric plates move apart.