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Plate Tectonics 2019
Test Description: Review for Plate tectonics quiz 2019
Instructions: Answer all questions to get your test result.
1) What technology did scientists use in the mid-1900s to map the mid-ocean ridge?
A
sonar
B
satellites
C
submarines
D
deep-sea diving
2) In sea-floor spreading, molten material rises from the mantle and erupts
A
in deep-ocean trenches
B
in deep-ocean trenches
C
along the edges of all the continents.
D
along mid-ocean ridges.
3) Most geologists think that the movement of Earth’s plates is caused by
A
convection currents in the mantle.
B
earthquakes.
C
conduction.
D
Earth’s magnetic field.
4) The geological theory that states that pieces of Earth’s lithosphere are in constant, slow motion due to convection currents in the mantle, is the theory of
A
plate tectonics.
B
deep-ocean trenches.
C
subduction.
D
sea-floor spreading.
5) A place where two plates slip past each other, moving in opposite directions, is known as a: (San Andreas Fault is a good example)
A
rift valley.
B
transform boundary.
C
convergent boundary.
D
divergent boundary.
6) A collision between two pieces of continental crust at a converging boundary produces a
A
mid-ocean ridge.
B
mountain range.
C
rift valley.
D
deep-ocean trench.
7) The Ring of Fire is an example of which kind of boundary?
A
convergent
B
divergent
C
ocean
D
transform
8) A rift valley forms when a ____________________ boundary forms on land.
A
transform
B
sea-floor
C
divergent
D
convergent
9) Sea-floor rocks near the ridge is _______________ than sea-floor rocks that are further away.
A
older
B
colder
C
more dense
D
younger
10) How many earthquakes occur in Alaska each month?
A
10,000
B
1500
C
800
D
200
11) What element has been used to help understand the magnetic reversal of the ocean floor?
A
carbon
B
hydrogen
C
aluminum
D
iron
12) This process is credited for continually adding new crust to the ocean floor.
A
subduction zones
B
plate tectonics
C
sea-floor spreading
D
continental drift
13) Lithospheric plates float on top of the __________________________.
A
subduction zone.
B
sea-floor.
C
outer core
D
asthenosphere
*select an answer for all questions
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