Semester 24 Review

Front

What is a Divergent Boundary?

Back

A boundary where two tectonic plates move away from each other, allowing magma to rise and create new crust.

Front

What geological feature is formed at a Convergent Boundary?

Back

Trenches, which are deep underwater canyons on the sea floor.

Front

How much wider does the Atlantic Ocean get each year?

Back

About 3-5 centimeters.

Front

What causes the movement of tectonic plates?

Back

Convection currents in the Asthenosphere.

Front

What is the relationship between earthquakes and plate boundaries?

Back

Earthquakes occur in concentrated areas that coincide with plate boundaries, supporting the theory of plate tectonics.

Front

Define Convergent Boundary.

Back

A boundary where two tectonic plates collide, often forming mountains or trenches.

Front

What is a Transform Boundary?

Back

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

Front

What is the Asthenosphere?

Back

A semi-fluid layer of the Earth's mantle that allows tectonic plates to move.

Front

What is the Moho discontinuity?

Back

The boundary between the Earth's crust and the underlying mantle.

Front

What is subduction?

Back

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