Dynamic Earth Module 2

Front

What is the name given to a supercontinent that began to break apart approximately 200 million years ago?

Back

Pangaea

Front

What is the theory that Earth's surface is broken into large, rigid pieces that move with respect to each other?

Back

Plate Tectonics

Front

What is the process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge?

Back

Seafloor Spreading

Front

What is a deep, underwater valley created by one plate subducting under another plate at a convergent plate boundary?

Back

Ocean Trench

Front

What is the process that occurs when one tectonic plate moves under another tectonic plate?

Back

Subduction

Front

What is the chemical or physical process of breaking down rock by wind, water, ice, or gravity called?

Back

Weathering

Front

What is the name of the theory that was created in the early 1900's that states that the continents were at one time together and have since split apart, citing specific fossil and landform evidence that supports the theory?

Back

Continental Drift

Front

What do transform boundaries create?

Back

Earthquakes

Front

What type of plate boundary is the Mid Atlantic Ridge?

Back

Divergent

Front

A plate boundary where two plates move toward each other and collide.

Back

convergent