plate tectonics

Front

What is plate tectonics?

Back

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

Front

What happens to temperature, pressure, and density as you move from the inner core to the crust?

Back

They all decrease.

Front

What is the asthenosphere?

Back

The plastic layer of the mantle on which pieces of the lithosphere move.

Front

What causes Earth's tectonic plates to move?

Back

Convection currents in the mantle.

Front

What is a plate boundary zone?

Back

An area where more than two tectonic plates interact in different ways.

Front

What is the lithosphere?

Back

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

Front

What is subduction?

Back

The process where one tectonic plate moves under another and sinks into the mantle.

Front

What are convergent boundaries?

Back

Boundaries where two tectonic plates collide, often forming mountains or causing subduction.

Front

What is the difference between oceanic and continental plates?

Back

Oceanic plates are denser and thinner than continental plates, which are thicker and less dense.

Front

What is a transform boundary?

Back

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