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Plate techtonics- section review

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A piece of lithosphere that moves around on top of the asthenosphere is called ____________.
tectonic plate
The process by which new oceanic lithosphere forms as magma rises toward the surface and solidifies.
sea-floor spreading
The strong lower part of the mantle is _______________.
mesosphere
The soft layer of the mantle on which tectonic plates move.
asthenosphere
Which is the liquid layer of the core?
outer core
What provides evidence that sea-floor spreading occurred?
magnetic reversals
The type of mountain that is formed when rock layers are squeezed together and pushed upward.
folded mountain
Scientists' knowledge of the Earth's interior has come primarily from
a. studying magnetic reversals
b. using GPS (global positioning system)
c. studying seismic waves generated by earthquakes
d. studying the pattern of fossils on different continents
c. studying seismic waves
What due scientists use to measure the rate of tectonic movement?
global positioning system (GPS)
plate motion due to the heating and cooling of rocks is
a. ridge push
b. convection
c. slab pull
convection
Plate motion due to gravity is
a. ridge push
b. convection
c. slab pull
ridge push
Plate motion due to higher densities is called
a. ridge push
b. convection
c. slab pull
slab pull
Boundary formed when tectonic plates slide past horizontally is called _______________.
transform boundary
Boundary formed when tectonic plates separate is called __________.
divergent boundary
The boundary formed when tectonic plates collide is called _____________.
convergent boundary
The place where tectonic plates touch is known as the _____________.
tectonic boundary
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