The modern continent of North America was most recently part of the landmass called:
Antarctica
Laurasia
Pangaea
Gondwana
Gondwana and Laurasia formed when:
The North American continent separated from Australia.
Antarctica broke away from Australia and Pangaea.
The ocean basin erupted in volcanic activity.
The supercontinent of Pangaea broke apart.
In what way does the Pacific plate distinguish itself from the others?
It is the only transform plate.
It is the least active.
It is the largest tectonic plate.
It is the smallest yet the most active tectonic plate.
The outermost shell of the earth made up of the crust and upper part of the mantle is called the _____
magnetosphere
asthenosphere
atmosphere
lithosphere
Ocean trenches and volcanic mountains are two surface features commonly found at:
Convergent plate boundaries.
All types of plate boundaries.
Transform plate boundaries.
Divergent plate boundaries.
We would be likely to find a rift valley growing at:
A divergent boundary.
A zone of continental uplift.
A continental shelf.
The deepest point of the ocean basin.
What is the Cascade Range an example of?
A volcanic arc along an ocean-continent boundary.
Past Mid-Atlantic ridge transformation.
Catastrophic dynamism of the Earth's crust.
A subduction zone along a divergent boundary.
A good example of a transform boundary is:
The Andes Mountains in South America.
The Philippine Islands in the Pacific.
The San Andreas Fault in California.
The Cascade Range in the Western U.S.
Convergent and transform plate boundaries can both be responsible for:
Generating strong earthquakes.
Continental drift and global warming.
The metamorphosis of fault lines between tectonic plates.
The expansion of the ocean floor and a rich marine life.
Which of the following represents a divergent boundary?
The Andes Mountains
The San Andreas Fault
The East African Rift Valley
The Cascade Mountains
Wegener's name for the super-continent he thought existed before the continents broke apart was _____.
Lunagea
Panthallassa
Pangea
Geotechnic
Which of the following major plates is located farthest south?
The African Plate
The Antarctic Plate
The Arctic Plate
The South American Plate
Which of the following can be formed by a convergent boundary?
Volcanic mountains
All of these
Deep ocean trenches
Volcanic islands
As the leading edge of a tectonic plate moves back into the Earth, gravity can assist its movement downward. This is known as what?
Thermal convection
Ridge push
Slab pull
Trench suction
What do we know about the continents we have today?
They will never form another supercontinent.
They have stopped moving due to plate tectonics.
They float on top of the ocean floor.
They formed when Pangaea split apart.
When plates that are higher at the spreading center flow downhill and eventually flatten out to the ocean floor, we call that _____.
ridge push
earthquakes
slab pull
both ridge push and slab pull
