The sky is blue because:
A) blue light is reflected off the world's oceans into the atmosphere.
B) blue light is not easily absorbed by the atmosphere.
C) air molecules scatter blue light more readily than other colors of visible light.
D) blue light is not easily scattered by the atmosphere.
Answer: C
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Which principle of relative age dating is important for determining the relative age of igneous rock that has intruded into overlying rock?
Why are the Ural Mountains important to Russia's manufacturing centers?
A) They are an important source of water needed for manufacturing. B) They are near major cities where the primary markets for Russia's goods are located. C) They have the largest deposits of industrial minerals in Russia. D) They have many fast-moving rivers, which provide hydropower for Russia's factories. E) They are the key source of uranium that fuels the nuclear power plants that power Russia's factories.
Shearing is a type of
A. lithostatic pressure B. compressive stress C. differential stress D. confining pressure
Cyclogenesis is the ____ of a mid-latitude cyclone
a. development or strengthening b. weakening or dissipation c. term for the exact midpoint d. shifting e. re-direction