EOSC Midterm Quizzes Questions with All Correct Answers
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EOSC
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EOSC
EOSC Midterm Quizzes Questions with All Correct Answers
1) Which of the following best describes this figure?
a. negative then positive feedback loop
b. negative feedback loop
c. positive feedback loop
d. A neutral system with no positive of negative feedback
e. positive then negative fe...
EOSC Midterm Quizzes Questions
with All Correct Answers
1) Which of the following best describes this figure?
a. negative then positive feedback loop
b. negative feedback loop
c. positive feedback loop
d. A neutral system with no positive of negative feedback
e. positive then negative feedback loop - Answer- C
2) About how old are the oldest water deposited sedimentary rocks on Earth?
a. 100 million years old
b. 170 million years old
c. 3.8 billion years old
d. 2.5 billion years old
e. 4.5 billion years old - Answer- C
3) Which of the following is TRUE regarding sea level at the end of the Permian?
a. Sea level was low as a major glaciation had just ended
b. Sea level was low in part due to the low volume occupied by ocean ridge systems
c. Sea level was high due to increased spreading ridge activity
d. Sea level was high due to the formation of many mountain chains on Pangea
e. Sea level was low, in part due to the formation of the Himalaya - Answer- B
4) Which of the following is FALSE regarding the pycnocline?
a. Its development is in part temperature related
b. Its development is in part salinity related
c. It is generally least developed in high latitudes
d. It permits the sinking of cold water masses
e. It is generally best developed in low to medium latitudes - Answer- D
5) These graphs showing how population of daisies vary with changing solar luminosity
over time in the Daisy World Model. What would the unhighlighted black line represent?
a. yellow daisies
b. microplankton
,c. black daisies
d. temperature
e. ocean temperature - Answer- C
6) Which of the following would be a reasonable estimate of the residence time of
ground water in the pore spaces of soil?
a. 500 years
b. 1 month
c. 10 million years
d. 10,000 years
e. 1 million years - Answer- B
7) which of the following best describes homeostasis?
a. It describes how positive feedback loops keep systems stable
b. A method of describing static systems
c. A type of photography used in analyzing chlorophyll
d. It describes how systems maintain stability
e. A feedback mechanism used to keep humans cool - Answer- D
8) Where would you expect the greatest amount of heat to escape from the earth's
interior?
a. At the poles
b. Along plate boundaries
c. Through continental crust
d. At the equator
e. Through oceanic crust - Answer- B
9) Which of the following is NOT a factor in the formation of ocean anoxic events in the
stagnant ocean model?
a. oxygenated water lying on top of less oxygenated water
b. warm water lying on top cold water
c. a stratified water body
d. a weak thermocline
e. High levels of microplankton productivity in the upper levels of the ocean - Answer- D
10) James Lovelock's hypothesis was criticized as being too teleological. Which of the
following is the BEST definition of a teleological hypothesis?
a. A hypothesis that is too focused on mathematics
b. A hypothesis that implies a kind of foresight or planning
c. A hypothesis that relies on feedback loops
d. A hypothesis that is based on no real data
, e. A hypothesis that does not take into account geological processes - Answer- B
11) Which of the following would be the MOST accurate definition of Earth System
Science?
a. A collection of interdependent parts bounded by the confines of the outermost
atmospheric layer.
b. The interaction of the lithosphere, hydrosphere and the atmosphere.
c. A collection of interdependent parts enclosed with the crust forming outer boundary of
the Earth System.
d. A collection of distinct parts bounded by the confines of the outermost atmospheric
layer which rarely interact.
e. The interaction of ecosystems over time - Answer- A
12) Which of the following would best describe system hierarchy from simple to complex
at a microscopic scale?
a. atom - nucleus - proton - DNA - quark
b. DNA - quark - proton - nucleus - atom
c. quark - proton - nucleus - atom - DNA
d. proton - quark - atom - nucleus - DNA
e. DNA - atom - nucleus - proton - quark - Answer- C
13) What is Dimethylsulphide? (DMS)
a. One of the salts precipitated in a sabkha environment
b. A chemical that might help increase the Earth's albedo
c. A chemical involved in photosynthesis
d. One of the important substances involved in the long term cycling of carbon
e. A chemical produced from the decay of meats such as chicken and beef - Answer- B
14) Which of the following might lead to higher than average salinities in some oceans?
a. Low rates of precipitation
b. Low input from rivers
c. all the above are possible factors
d. Confined oceanic circulation
e. High rates of evaporation - Answer- C
15) Which of the following would signal the "beginning of the end" for the Tethys
Ocean?
a. The closure of the Mediterranean at the Straights of Gibraltar
b. Southwards drift of Africa
c. Rifting of N-America from S-America sometime during the Late Triassic
d. An influx of fresh water in the northern Atlantic
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