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Plate Tectonics
Plate Tectonics
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Plate tectonics, sea floor spreading, continental drift review
Flashcards
20 cards
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Questions
20
Answers
1
What does plate tectonics cause?
Forms mountains
Volcanoes
Earthquakes
Forms ocean tranches
2
Which of the following is used as evidence of seafloor spreading?
fossil evidence
rock clues
magnetic pole reversal
climate clues
3
How do scientists explain the formation of underwater mountain ranges?
convection currents
strike-slip faults
seafloor spreading
continental drift
4
A divergent boundary is a boundary between two plates that_______________________.
move away from each other
move toward each other
converge
slide along each other
5
What type of plate boundary has plates sliding past each other?
transform boundaries
subduction zones
convergent boundaries
divergent boundaries
6
What is the process occurring in the mantle that is the force behind plate tectonics?
divergent boundary
normal fault
convection current
plate boundary
7
Which of the following is true about the lithospheric plates?
They move occasionally
The move annually
They constantly move
They never move
8
What type of plate boundary is most likely to occur at point A in the diagram?
divergent
convergent
transform
reverse
9
What causes geologic events such as earthquakes, volcanoes, and the creation of mountains?
Position of the planets
Lithospheric plate movement
Atmospheric pressure
Ocean tides
10
What do scientists believe is the force behind the plate tectonics theory?
gravity slab pull
convection currents
the Sun's gravity
the movement of the planets
11
What is the name of the supercontinent that Alfred Wegener theorized about?
Gonwanaland
Laurasia
Pangaea
North America
12
What evidence proved S. America, Africa, India, and Australia were once covered by glaciers?
cold climates
enormous valleys formed by glaciers
glacial deposits and rock surfaces scarred by glaciers
leftover portions of glaciers
13
The cycle of heating, rising, cooling, and sinking is called a _______________.
Convection current
Subduction zone
Conduction current
Convergent boundary
14
Which scientists is credited with the continental drift hypothesis?
Neil Armstrong
Harry Hess
J. Tuzo Wilson
Alfred Wegener
15
The youngest rocks in the ocean floor are located at the mid-ocean_______.
trenches
basins
ridges
volcanoes
16
What happens to rock around a sub ducting slab?
It disappears from Earth
It goes under the other plate
It combines with the other rock
It goes over the other plate
17
Where might mountains forms?
Divergent boundaries
Convergent boundaries
Magnetic Boundaries
Transform boundarie
18
What is the approximate rate of plate movement?
a few centimeters a year
a few meters a year
a few millimeters a year
a few kilometers a year
19
Do two colliding continental plates ALWAYS cause volcanoes?
No
Yes
20
Which of the following can be explained at Point B in the diagram?
plates are not moving
plates move apart and volcanoes form
plates move past each other sideways
plates move toward each other and volcanoes form
