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APSC 151 Exam Prep Questions And Answers
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RNA ~ single-stranded nucleic acid that contains the sugar ribose DNA ~ A complex molecule containing the genetic information that makes up the chromosomes. Stromatolites ~ Oldest known fossils formed from many layers of bacteria and sediment. Anthroprocene ~ New era of geological history,...

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  • August 5, 2024
  • 34
  • 2024/2025
  • Exam (elaborations)
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APSC 151 Exam Prep
Questions And Answers

Hydrosphere


✓✓✓✓~ Geological zone that includes Oceans, glacial ice and freshwater




Catastrophism


✓✓✓✓~ One big sudden change - only true for meteor impacts. Shaping Earth's landscape
by catastrophes.




Uniformitarianism


✓✓✓✓~ Charles Lyell's idea that geologic processes have not changed throughout Earth's
history.




Divergent Boundary


✓✓✓✓~ A plate boundary where two plates move away from each other.




Geomagnetic Reversals

,✓✓✓✓~ a change in a planet's magnetic field such that the positions of magnetic north and
magnetic south are interchanged, while geographic north and geographic south
remain the same.




Pangea


✓✓✓✓~ A supercontinent containing all of Earth's land that existed about 225 million years
ago.




Atmosphere


✓✓✓✓~ A mixture of gases that surrounds the Earth.




Bioshpere


✓✓✓✓~ all the parts of the planet that are inhabited by living things; sum of all Earth's
ecosystems




Geosphere


✓✓✓✓~ the solid part of the earth consisting of the crust and outer mantle




Continental Drift


✓✓✓✓~ The hypothesis that states that the continents once formed a single landmass,
broke up, and drifted to their present locations - Proposed by Alfred Wagner

,Core


✓✓✓✓~ The central part of the earth below the mantle made of two parts - a liquid outer
shell, and a solid centre




Precambrian


✓✓✓✓~ Name for the time in earths early history that accounts for over 80% of earth's time,
but only cellular organisms lived.




Mesozoic Era


✓✓✓✓~ Age of reptiles




Paleozoic Era


✓✓✓✓~ the part of geologic time 570-245 million years ago ; invertebrates, fishes,
amphibians, reptiles, ferns, and cone-bearing trees were dominant




Lithosphere


✓✓✓✓~ A rigid layer made up of the uppermost part of the mantle and the crust.




Asthenosphere


✓✓✓✓~ The soft layer of the mantle on which the lithosphere floats.

, Mesosphere


✓✓✓✓~ The strong, lower part of the mantle between the asthenosphere and the outer core




Convergent Boundary


✓✓✓✓~ A plate boundary where two plates move toward each other.




mid-ocean ridge


✓✓✓✓~ An underwater moutain chain where new ocean floor is formed




subduction zone


✓✓✓✓~ The region where oceanic plates sink down into the asthenosphere.




Minerals


✓✓✓✓~ Molecules that occur naturally, are inorganic, solid, and have a definite and ordered
atomic structure.




Polymorph


✓✓✓✓~ One mineral that can take multiple forms (Ex: Carbon is graphite and diamond)




crystal habit

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