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Question
What two chemical elements are most abundant in the deep interior of the earth?A) iron and magnesium
B) magnesium and oxygen
C) hydrogen and helium
D) silicon and oxygen
Answer
This answer is hidden. It contains 1 characters.
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A) reserve
B) ore
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What does the tendency of micas to produce thin cleavage flakes suggest about its crystal structure?
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C) The structure is produced by flow in the igneous rock, aligning glass layers within the crystal structure.
D) The atoms are arranged in orderly arrangements that form strongly bonded sheets separated by weak bonds between the sheets.
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Use the Periodic table below to answer the following questions: When electrons are shared amongst all atoms, the resulting bond is a(n) ________ bond.
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Use the Periodic table below to answer the following questions: Element 20, Ca, has what chemical property?
A) It behaves as a metal ion, giving up two electrons to form a +2 ion.
B) It tends to form covalent bonds and an ion with a charge of +1.
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D) It tends to be inert, and thus is dispersed throughout the crust.
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Which of the following is not a system?
A) the biosphere
B) soil, plants, rock, soil organisms, and animals
C) the study of minerals
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B) heat from Earth's interior
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B) oceanic ridges
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A major cause of the differences in elevation between ocean basins and continents is ________.
A) viscosity
B) temperature
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B) Asthenosphere
C) Lower mantle
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B) spreading ridges
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