4.1 Plate Tectonics

Front

What is a divergent boundary?

Back

A boundary between tectonic plates where the two plates move away from each other, creating new crust as magma rises to the surface.

Front

Where does sea floor spreading occur?

Back

At mid-ocean ridges, where molten material rises from the mantle and creates new oceanic crust.

Front

What type of boundary is characterized by two tectonic plates moving toward each other?

Back

Convergent boundary.

Front

What is a subduction zone?

Back

A region where one tectonic plate slides under another, often leading to volcanic activity.

Front

Define convergent boundary.

Back

A plate boundary where two plates move toward each other, which can result in one plate being forced beneath another.

Front

What happens at mid-ocean ridges?

Back

Magma rises from the mantle, creating new oceanic crust as tectonic plates diverge.

Front

What is the result of tectonic plates colliding?

Back

The formation of mountains, earthquakes, and volcanic activity, depending on the type of plates involved.

Front

Explain the concept of sea floor spreading.

Back

The process by which new oceanic crust is formed at mid-ocean ridges and older crust is pushed away from the ridge.

Front

What is a transform boundary?

Back

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

Front

What geological features are associated with convergent boundaries?

Back

Mountains, deep ocean trenches, and volcanic arcs.