Approximately how much water does Earth's hydrosphere contain?
A) 150 million cubic kilometers
B) 550 million cubic kilometers
C) 750 million cubic kilometers
D) 1.36 billion cubic kilometers
E) 5.4 million cubic kilometers
D
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What mountain building event, which occurred about 35-55 million years ago, created the front ranges and foothills of the Rocky Mountains?
A) The Laramide Orogeny B) The Columbia Orogeny C) The Gondwana Orogeny D) The Silurian Orogeny
You observe a dark colored igneous rock with very fine crystals that are only visible under
magnification. What can you say about this rock? a. It cooled slowly in a magma chamber. b. It cooled quickly in a magma chamber. c. It cooled slowly on Earth’s surface. d. It cooled quickly on Earth’s surface. e. It was ejected as a fine ash and later cemented together.
Which of the following terms applies to the vertical motion of air caused by the sun heating the ground?
A. orographic lifting B. subsidence C. convection D. convergence
Why is the solution to pollution not always dilution?
A. Some pollutants cannot be dissolved in any solvent. B. Water itself is a pollutant. C. Liquid pollutants cannot be dissolved in water. D. Some pollutants are toxic at such low concentrations that they cannot be practically diluted.