Plate Tectonics

Front

What is the hot, gel-like zone within the mantle where convection takes place?

Back

Asthenosphere

Front

At convergent plate boundaries where oceanic crust is involved, what happens to the old crust?

Back

Old crust is being destroyed.

Front

Which of the following has the lowest density: Mantle, Asthenosphere, Oceanic Crust, or Continental Crust?

Back

Continental Crust.

Front

What is the region called where oceanic crust goes under continental crust?

Back

A subduction zone.

Front

Continental Mountain Ranges form at which type of plate boundary?

Back

Convergent - Continental - Continental.

Front

What is the outermost layer of the Earth called?

Back

Lithosphere.

Front

What is the process called when two tectonic plates move away from each other?

Back

Divergence.

Front

What type of boundary occurs when two plates slide past each other?

Back

Transform boundary.

Front

What is the term for the movement of the Earth's plates on the semi-fluid asthenosphere?

Back

Plate tectonics.

Front

What geological feature is formed at a divergent boundary?

Back

Mid-ocean ridge.