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Question
What causes ocean currents?A) density differences in the oceans
B) temperature differences in the oceans
C) unequal heating of the earth
D) winds
E) none of the above
Answer
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Related questions
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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?
A) The crystal structure is characterized by complex polymerized mats that form a sheetlike structure.
B) The structure is characterized by rings that form an interlocking network, forming planar sheets.
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.
C) It behaves as a nonmetal, accepting electrons to form an ion with charge -2.
D) It tends to be inert, and thus is dispersed throughout the crust.
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Internally, the earth consists of spherical shells with different compositions and densities.
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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
D) the Pacific Ocean and the west coast of North America
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A) the Sun
B) heat from Earth's interior
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D) none of the above
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A) negative feedback mechanisms
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A) deep-ocean trenches
B) oceanic ridges
C) seamounts
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B) flat areas that include rocks older than 1 billion years old
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Flat, stable areas of continental crust tend to be located ________.
A) along coastlines
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D) in areas that receive large amounts of rainfall
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A major cause of the differences in elevation between ocean basins and continents is ________.
A) viscosity
B) temperature
C) density
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The Andes Mountains in South America are formed by ________.
A) subduction
B) sea floor spreading
C) back-arc contraction
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A) Lithosphere
B) Asthenosphere
C) Lower mantle
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A) hot spots on the sea floor, like Iceland
B) spreading ridges
C) convergent plate margins
D) transform plate margins