Which of the following is the definition of pH?
A) 1 x 10^pH
B) log[H3O+]
C) -log[H3O+]
D) none of these
C
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What is not a factor in the amount of light penetrating the ocean?
A) The angle at which the light approaches the Earth B) The surface turbulence of the ocean C) The amount of light absorbed by clouds D) The presence of ice or foam on the surface
The Mississippi Delta is an example of which of the following?
A) zone of sediment production B) zone of deposition C) zone of transportation D) angle of repose
Earth's inner core is composed of:
a. molten lava. b. molten copper and nickel. c. solid basalt. d. solid iron and carbon. e. solid iron and nickel.
Which of the following correctly describe comets?
A. small in size B. icy and rocky C. They have a tail of gas and ice. D. All of these correctly describe comets.