Convergent boundaries form these.
What are mountains?
The number of years ago that Pangea existed.
What is 225 million years ago?
The three types of plate formations...
What are convergent, divergent and transform?
These boundaries move toward one another.
What are convergent boundaries?
These boundaries slide past each other.
What are transform boundaries?
These boundaries separate from one another.
What are divergent boundaries?
He discovered the idea of Pangea.
Who is Alfred Wegener?
This is the largest fault line in North America.
What is the San Andreas Fault in California?
The number of major plates...
What is 9?
The name of the plate that the U.S. is on...
What is the North American plate?
These plates have greater density...
This is the middle layer of the earth.
What is the mantle?
The plates rest on this layer of the earth.
What is the crust?
These form when oceanic plates collide with continental plates.
What are volcanoes?
The area of the Pacific Plate that has many earthquakes and volcanoes is known as ....
What is the Ring of Fire?