The Earth And Plate Tectonics Question Preview (ID: 41493)
Introduction To Petroleum Geoscience (UTP).
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A / An ________________ is an explanation of a phenomenon that has been tested rigorously, and that holds true after competing hypotheses have been eliminated.
a) observation
b) hypotheses
c) theory
d) research
The two most abundant elements that can be found on Earth’s crust are ___ and ____.
a) nitrogen; oxygen
b) magnesium; oxygen
c) molten rock; oxygen
d) silicon; oxygen
Which statement is WRONG regarding the Earth?
a) There are five layers altogether forming the Earth including inner core and outer core.
b) Inner core is solid while outer core is liquid.
c) The lithosphere is about 100 km thick.
d) The crust is about 100 km thick.
The molten ________________ core gives rise to an extensive magnetic field.
a) inner
b) outer
c) nickel-iron
d) magma
135 million years ago, Pangaea broke up and formed __ (north part) and __ (south part).
a) laurasia; gondwana
b) gondwana; laurasia
c) eurasia; gondwana
d) gondwana; eurasia
Typical feature of __________________ margins is deep sea trenches.
a) convergent
b) divergent
c) transform
d) shear
The first line of evidence used to promote continental drift theory was that ____________.
a) paleomagnetic fields are not consistent with the modern day magnetic field
b) the continents seem to fit together like pieces of a jigsaw puzzle
c) scientists could tell that the continents are still moving today
d) the plates are moving in the form of divergence, convergence and transform
What type of plate boundary does a mid-ocean spreading ridge represent?
a) convergent
b) divergent
c) transform
d) shear
“Present is the key to the past.” This statement refers to __________________________.
a) the forming of one big supercontinent called Pangaea.
b) geological time scale
c) superposition law
d) uniformitarianism
The law of superposition states that __________________________________________.
a) each bed is older than the one above it.
b) a fault is younger than the rocks that it cuts.
c) the present is the key to the past.
d) geological time scale can be divided into eons, eras, periods and epochs.
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