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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
deep-sea diving
D
submarines
2) In sea-floor spreading, molten material rises from the mantle and erupts
A
in deep-ocean trenches
B
along the edges of all the continents.
C
in deep-ocean trenches
D
along mid-ocean ridges.
3) Most geologists think that the movement of Earth’s plates is caused by
A
conduction.
B
earthquakes.
C
Earth’s magnetic field.
D
convection currents in the mantle.
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
deep-ocean trenches.
B
subduction.
C
plate tectonics.
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
convergent boundary.
B
rift valley.
C
divergent boundary.
D
transform boundary.
6) A collision between two pieces of continental crust at a converging boundary produces a
A
rift valley.
B
mountain range.
C
mid-ocean ridge.
D
deep-ocean trench.
7) The Ring of Fire is an example of which kind of boundary?
A
transform
B
convergent
C
divergent
D
ocean
8) A rift valley forms when a ____________________ boundary forms on land.
A
sea-floor
B
transform
C
divergent
D
convergent
9) Sea-floor rocks near the ridge is _______________ than sea-floor rocks that are further away.
A
younger
B
older
C
colder
D
more dense
10) How many earthquakes occur in Alaska each month?
A
200
B
1500
C
10,000
D
800
11) What element has been used to help understand the magnetic reversal of the ocean floor?
A
aluminum
B
iron
C
carbon
D
hydrogen
12) This process is credited for continually adding new crust to the ocean floor.
A
subduction zones
B
sea-floor spreading
C
plate tectonics
D
continental drift
13) Lithospheric plates float on top of the __________________________.
A
asthenosphere
B
subduction zone.
C
sea-floor.
D
outer core
*select an answer for all questions
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