Plate Tectonics 2019 Question Preview (ID: 46472)
Review For Plate Tectonics Quiz 2019.
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Lithospheric plates float on top of the __________________________.
a) asthenosphere
b) sea-floor.
c) subduction zone.
d) outer core
This process is credited for continually adding new crust to the ocean floor.
a) sea-floor spreading
b) plate tectonics
c) continental drift
d) subduction zones
How many earthquakes occur in Alaska each month?
a) 1500
b) 800
c) 200
d) 10,000
What element has been used to help understand the magnetic reversal of the ocean floor?
a) iron
b) hydrogen
c) aluminum
d) carbon
Sea-floor rocks near the ridge is _______________ than sea-floor rocks that are further away.
a) younger
b) older
c) more dense
d) colder
A rift valley forms when a ____________________ boundary forms on land.
a) divergent
b) convergent
c) transform
d) sea-floor
The Ring of Fire is an example of which kind of boundary?
a) convergent
b) divergent
c) transform
d) ocean
A collision between two pieces of continental crust at a converging boundary produces a
a) mountain range.
b) mid-ocean ridge.
c) deep-ocean trench.
d) rift valley.
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) transform boundary.
b) divergent boundary.
c) convergent boundary.
d) rift valley.
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) subduction.
c) deep-ocean trenches.
d) sea-floor spreading.
Most geologists think that the movement of Earth’s plates is caused by
a) convection currents in the mantle.
b) conduction.
c) earthquakes.
d) Earth’s magnetic field.
In sea-floor spreading, molten material rises from the mantle and erupts
a) along mid-ocean ridges.
b) along the edges of all the continents.
c) in deep-ocean trenches
d) in deep-ocean trenches
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
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