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Geoscience test 2 || Already Passed.

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  • Geoscience

anthropocene correct answers the age of human transformation of Earth's biological and physical systems crust correct answers Earth's molten surface cooled and hardened into a rigid surface cyanobacteria correct answers photosynthetic bacteria, among the earliest forms of life preserved un...

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  • September 26, 2024
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  • 2024/2025
  • Exam (elaborations)
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  • Geoscience
  • Geoscience
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Geoscience test 2 || Already Passed.
anthropocene correct answers the age of human transformation of Earth's biological and physical
systems

crust correct answers Earth's molten surface cooled and hardened into a rigid surface

cyanobacteria correct answers photosynthetic bacteria, among the earliest forms of life preserved

uniformitarianism correct answers the principle that the same gradual and nearly imperceptible
processes operating now have operated in the past, underpins almost all evolutionary, tectonic,
and erosional processes

superposition principle correct answers in a sequence of rock layers, the oldest rocks are at the
bottom, and the youngest rocks are at the top

radiometric dating correct answers assigning ages to materials based on radioactive half-life of
unstable elements in those materials

seismic wave correct answers energy released by earthquakes that travel through Earth's interior

inner core correct answers composed of solid iron and nickel, extends from Earth's center to
about 5,150 km (3,200 mi) below Earth's surface

outer core correct answers composed of liquid iron and nickel, extends to about 2,900 km (1,800
mi) below Earth's surface

lower mantle correct answers the layer of heated and slowly deforming solid rock that lies
between the base of the crust and the outer core

asthenosphere correct answers found between depths of 100 and 200 km (62 and 124 mi), softer
and weaker than the lower mantle beneath

lithosphere correct answers the crust and the lithospheric mantle beneath it, extending to a depth
of about 100 km (62 mi) on average

continental crust correct answers makes up continents, composed mainly of granite

oceanic crust correct answers beneath the oceans, composed mainly of basalt

basalt correct answers a dark, heavy, fine-grained volcanic roc

magma correct answers melted rock that is below the surface of the crust, often hardens into
granite

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