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As the leading edge of a tectonic plate is forced back into the mantle, a small convection current forms beneath it, pulling it downwards. This is known as what?
 
Trench suction
 
Slab pull
 
Thermal convection
 
All answers are correct
What separates the South American plate and the African plate?
 
The Mid-Atlantic Ridge
 
The Mid-Pacific Ridge
 
The Indian Ocean
 
The Indo-Australian Plate
Which of these is a FALSE statement about hot spots?
 
Hot spots occur at the boundaries of tectonic plates.
 
Hot spots prove that tectonic plates are not stationary.
 
The Hawaiian Islands are examples of hot spots.
 
Hot spots occur within tectonic plates.
What discovery was NOT made from mapping the ocean floor?
 
Magnetic immobility
 
Seafloor spreading
 
Magnetic stripes in ocean rock
 
Underwater volcanoes
What fossils did Wegener NOT use to support his idea of continental drift?
 
Tyrannosaurus
 
Mesosaurus
 
Lystrosaurus
 
Cynognathus
What was the name of the project started in the 1960s that was designed to extract and analyze samples from the ocean floor?
 
The Deep Sea Drilling Project
 
The Ocean Basin Project
 
The Glomar Project
 
The Seafloor Drilling Project
When plates that are higher at the spreading center flow downhill and eventually flatten out to the ocean floor, we call that _____.
 
ridge push
 
both ridge push and slab pull
 
slab pull
 
earthquakes
What do we know about the continents we have today?
 
They formed when Pangaea split apart.
 
They float on top of the ocean floor.
 
They will never form another supercontinent.
 
They have stopped moving due to plate tectonics.
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
 
Trench suction
 
Thermal convection
 
Ridge push
Which of the following can be formed by a convergent boundary?
 
All of these
 
Volcanic mountains
 
Deep ocean trenches
 
Volcanic islands
Which of the following major plates is located farthest south?
 
The Antarctic Plate
 
The South American Plate
 
The African Plate
 
The Arctic Plate
Wegener's name for the super-continent he thought existed before the continents broke apart was _____.
 
Pangea
 
Geotechnic
 
Lunagea
 
Panthallassa
Which of the following represents a divergent boundary?
 
The East African Rift Valley
 
The San Andreas Fault
 
The Andes Mountains
 
The Cascade Mountains
Convergent and transform plate boundaries can both be responsible for:
 
Generating strong earthquakes.
 
The expansion of the ocean floor and a rich marine life.
 
The metamorphosis of fault lines between tectonic plates.
 
Continental drift and global warming.
A good example of a transform boundary is:
 
The San Andreas Fault in California.
 
The Philippine Islands in the Pacific.
 
The Andes Mountains in South America.
 
The Cascade Range in the Western U.S.
What is the Cascade Range an example of?
 
A volcanic arc along an ocean-continent boundary.
 
A subduction zone along a divergent boundary.
 
Catastrophic dynamism of the Earth's crust.
 
Past Mid-Atlantic ridge transformation.
We would be likely to find a rift valley growing at:
 
A divergent boundary.
 
The deepest point of the ocean basin.
 
A zone of continental uplift.
 
A continental shelf.
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.
The outermost shell of the earth made up of the crust and upper part of the mantle is called the _____
 
lithosphere
 
magnetosphere
 
asthenosphere
 
atmosphere
In what way does the Pacific plate distinguish itself from the others?
 
It is the largest tectonic plate.
 
It is the least active.
 
It is the smallest yet the most active tectonic plate.
 
It is the only transform plate.
Gondwana and Laurasia formed when:
 
The supercontinent of Pangaea broke apart.
 
The North American continent separated from Australia.
 
The ocean basin erupted in volcanic activity.
 
Antarctica broke away from Australia and Pangaea.
The modern continent of North America was most recently part of the landmass called:
 
Laurasia
 
Antarctica
 
Pangaea
 
Gondwana
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