If metals are the heaviest solids, in which layer of the Earth would they mostly be located?
A) oceanic crust
B) continental crust
C) mantle
D) core
Answer: D
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Answer the following statement true (T) or false (F)
If you drilled into an oceanic plateau, you would most likely find
A) a thin layer of oceanic sediment over continental crust. B) andesitic volcanoes buried by turbidity currents. C) a normal thickness of oceanic crust overlain by andesitic volcanoes. D) large amounts of basalt derived from melting in the mantle.
The theory of plate tectonics is a ____
a. ?theory that improved on the theory of continental drift b. ?hypothesis that may improve on the theory of continental drift c. ?theory that disproved the theory of continental drift d. ?hypothesis that may disprove the theory of continental drift e. ?natural law that arose from the theory of continental drift
Which of the following is a potential source of ground water pollution?
A) Dumps B) Pesticides and fertilizers C) Septic tanks D) Septic tanks, pesticides and fertilizers, and dumps