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Geology 107 Midterm 1 UIUC EXAM COMPLETE
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+/ARIZONA COLLEGE OF NURSING
- Carbonaceous chondrite
- THE CORRECT ANSWER is: a class of extremely ancient,
carbon-rich meteorites
- Oceanic vs continental crust
- THE CORRECT ANSWER is: oceanic crust is denser and
thinner than continental crust
- Inner core
- THE CORRECT ANSWER is: A dense sphere of solid iron
and nickel at the center of Earth (5100-6370)
- Dynamo
- THE CORRECT ANSWER is: Theory of mantle convecting
in such a way to produce eddy currents
- Crust
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- THE CORRECT ANSWER is: The thin and solid outermost
layer of the Earth above the mantle (5-70 km)
- Mantle
- THE CORRECT ANSWER is: the layer of the earth
between the crust and the core (70-3000km)
- Core
- THE CORRECT ANSWER is: The central part of the earth
below the mantle (3000-6370 km)
- Lithosphere
- THE CORRECT ANSWER is: A rigid layer made up of the
uppermost part of the mantle and the crust. (0-100)
- Asthenosphere
- THE CORRECT ANSWER is: The soft layer of the mantle
on which the lithosphere floats. (100-350)
- Mesosphere
- THE CORRECT ANSWER is: The strong, lower part of
the mantle between the asthenosphere and the outer core (350- 2900)
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- Outer core
- THE CORRECT ANSWER is: A layer of molten iron and
nickel that surrounds the inner core of Earth (2900-5100)
- Ridge
- THE CORRECT ANSWER is: a long, narrow, conspicuous
elevation of land
- Trench
- THE CORRECT ANSWER is: A deep, steep-sided canyon
in the ocean floor.
- Curie temperature
- THE CORRECT ANSWER is: The temperature above
which a permanent magnet loses its ferromagnetic properties.
- Abyssal plain
- THE CORRECT ANSWER is: a large, flat, almost level
area of the deep-ocean basin
- Midocean ridge
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- THE CORRECT ANSWER is: A global system of
underwater mountains created by seafloor spreading
- Sea mounts
- THE CORRECT ANSWER is: Mountains rising from sea
floor as result of dead volcanos
- What was wrong about Wegener's original theory
- THE CORRECT ANSWER is: continents do not "plow"
through the sea floor
- Declination vs Inclination
- THE CORRECT ANSWER is: Declination degree off
magnetic north is from true north, Inclination flat if at equator pointed down at north pole
- Tectonic plate
- THE CORRECT ANSWER is: Sections of the Earth's crust
that move due to convection currents.
- Pangea
- THE CORRECT ANSWER is: A supercontinent containing
all of Earth's land that existed about 225 million years ago.