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 are tectonic plates?

Back

Large, rigid pieces of the Earth's lithosphere that move and interact at their boundaries, causing geological events.

Front

What is a divergent boundary?

Back

A tectonic plate boundary where two plates move away from each other, often resulting in the formation of new crust, such as mid-ocean ridges.

Front

What is a convergent boundary?

Back

A tectonic plate boundary where two plates move towards each other, often resulting in subduction, mountain building, or volcanic activity.

Front

What is a transform boundary?

Back

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

Front

What is subduction?

Back

The process by which one tectonic plate moves under another plate and sinks into the mantle, often leading to volcanic activity.

Front

What evidence supports the theory of continental drift?

Back

Fossil similarities across continents, matching geological formations, and the fit of continental shapes.

Front

What are plate boundary zones?

Back

Areas where more than two tectonic plates interact in various ways, leading to complex geological activity.

Front

What is an earthquake?

Back

A sudden release of energy in the Earth's crust that creates seismic waves, often occurring at tectonic plate boundaries.

Front

What is a volcano?

Back

An opening in the Earth's crust through which molten rock, ash, and gases are expelled, often found at convergent or divergent boundaries.