Front

The type of plate boundary where two plates come together is a ....

Back

Convergent Boundary

Front

A divergent boundary occurs when plates ....

Back

Pull apart

Front

Where are the youngest rocks on the seafloor most likely found?

Back

Closest to a mid-ocean ridge

Front

The process by which molten material adds new oceanic crust to the ocean floor is called ___________. Options: Divergent boundary, Sea-floor spreading, Convergent boundary, Renovating 

Back

Sea-floor spreading

Front

What is the process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary?

Back

Subduction

Front

A _____________ is when two plates move past each other in opposite directions.

Back

transform boundary

Front

What is the theory that pieces of Earth's lithosphere are in constant motion, driven by convection currents in the mantle?

Back

Plate tectonics

Front

The lithosphere combines what two layers?

Back

Crust & Upper Mantel

Front

The thinnest layer of the Earth is the ___________. Options: mantle, crust, core

Back

crust

Front

What is the thickest layer of the Earth? Options: the crust, the mantle, the outer core, the inner core

Back

the mantle