4.1 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 is Sea Floor Spreading?

Back

The process by which new oceanic crust is formed at mid-ocean ridges as molten material rises from the mantle.

Front

What are the two types of crust?

Back

Continental crust and oceanic crust.

Front

What is a Convergent Plate Boundary?

Back

A boundary where two tectonic plates collide, often creating mountains, trenches, or volcanic activity.

Front

What is Subduction?

Back

The process by which a denser tectonic plate is forced beneath another plate, leading to the formation of trenches, volcanoes, and earthquakes.

Front

What geological features are formed at Divergent Boundaries?

Back

Mid-ocean ridges and rift valleys.

Front

What is a Transform Boundary?

Back

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

Front

What causes Earthquakes?

Back

The sudden release of energy in the Earth's crust due to the movement of tectonic plates.

Front

What is a Mid-Ocean Ridge?

Back

An underwater mountain range formed by the upwelling of magma at divergent plate boundaries.

Front

What are the effects of Subduction?

Back

Formation of deep ocean trenches, volcanic arcs, and intense seismic activity.