Why are boulders not a mineral?
A. They are not naturally occurring.
B. They are not solid.
C. They are organic.
D. They do not have a well-defined chemical composition.
E. They do not have an orderly crystalline structure.
Answer: D. They do not have a well-defined chemical composition.
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Suppose saturated polar air has an air temperature and dew point of -10ºC, and unsaturated desert air has an air temperature of 35ºC and a dew point of 10ºC. Which of the following describes the water vapour and relative humidity of desert air compared to polar air?
A. Desert air has less water vapour and lower relative humidity than polar air. B. Desert air has less water vapour and higher relative humidity than polar air. C. Desert air has more water vapour and lower relative humidity than polar air. D. Desert air has more water vapour and higher relative humidity than polar air.
Moving progressively away from the ridges, the ocean water depths increase systematically with seafloor age due to all but which of the following?
A. Isostatic down warping due to the weight of sediments deposited on the sea floor B. Conduction of heat away from warm surface rocks C. Erosion of the older ocean floor by deep ocean currents D. Cooling and contraction of the oceanic crust with a resultant increase in density
A pluvial consequence of the Pleistocene glaciation has been the formation of ________.
A) geysers B) sinkholes C) lakes D) fjords E) erratics
During which of the following times does the North Pole receive no hours of sunlight?
A) Fall equinox B) Winter solstice C) Summer solstice D) Spring equinox