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