Tectonic Plates

Two divergent plate boundaries under the ocean form a...

Mountains form at a __________________ convergent boundary. 

Molten material rising from the mantle and erupting along mid-ocean ridges is called...

What process continually adds new crust to the ocean floor on both sides of a mid-ocean ridge?

Subduction occurs where the oceanic crust bends down toward the mantle at a(n)

What forms where two plates move apart?

A plate boundary where two plates move toward each other is called a _________ boundary. 

Where are the longest mountain ranges on Earth found?

Two plates moving away from each other is called a ...

What technology did scientists use in the mid-1900s to map the mid-ocean ridge?

What forms when continental plates pull apart at a divergent plate boundary on land?

What forms if a continental and oceanic plate collide and the oceanic crust bends downward?

When oceanic crust sinks beneath a deep-ocean trench and back into the mantle.

What causes Earth's plates to move?

The lithosphere is broken into sections called ______________. 

The place where two plates slip past each other in opposite directions is called a ...

What is the theory that pieces of Earth's lithosphere are in slow, constant motion?

Who's Theory of Plate tectonics was supported by landforms, fossils, and climate?

What is a break in Earth's crust along which rocks move?

Oceanic crust near the mid-ocean ridge is...