Unit 31 Review Questions

* not completed

. Why do the Appalachians still exist, even after hundreds of millions of years?

The range has continually experienced intense periods of intraplate volcanism. correct incorrect

The range is rising along a major transform fault. correct incorrect

A nearby subduction zone leads to periods of volcanism. correct incorrect

Subsurface rocks continue to rise due to isostatic forces. correct incorrect

* not completed

. Why is the crust rising in the Great Lakes region?

It rises because of isostatic rebound. correct incorrect

It rises along bordering normal faults. correct incorrect

It rises due to a subsurface dome of magma. correct incorrect

It rises due to compression from colliding continental plates. correct incorrect

* not completed

. Prior to the breakup of Pangaea:

plate tectonics did not occur correct incorrect

continental shields were formed through plate tectonics correct incorrect

there was an insufficient amount of surface rock to form continents correct incorrect

the super continent had existed for nearly two billion years correct incorrect

* not completed

. You would expect crust to extend deepest underneath a mountain range that is:

1500 meters high correct incorrect

2500 meters high correct incorrect

4000 meters high correct incorrect

5500 meters high correct incorrect

* not completed

. The Wrangellia terrane originated as:

continental crust correct incorrect

oceanic crust correct incorrect

volcanic island arcs correct incorrect

continental volcanic arcs correct incorrect