Continental Drift, Plate Tectonics, and layers of the Earth

Front

What is Continental Drift?

Back

A theory that explains how continents have moved over geological time, suggesting they were once part of a single landmass called Pangaea.

Front

What is Plate Tectonics?

Back

A scientific theory that describes the large-scale movements of Earth's lithosphere, which is divided into tectonic plates.

Front

What is the lithosphere?

Back

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

Front

What is the asthenosphere?

Back

A semi-fluid layer of the mantle beneath the lithosphere that allows tectonic plates to move.

Front

What happens at a convergent plate boundary?

Back

Two tectonic plates collide, leading to subduction or mountain formation.

Front

What happens at a divergent plate boundary?

Back

Two tectonic plates move apart, leading to the formation of new crust, often seen at mid-ocean ridges.

Front

What is a transform plate boundary?

Back

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

Front

What is subduction?

Back

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

Front

What is the inner core?

Back

The innermost layer of the Earth, composed of solid iron and nickel, and under immense pressure.

Front

What is the outer core?

Back

The layer of the Earth beneath the mantle, composed of liquid iron and nickel, responsible for Earth's magnetic field.