Who was able to prove that there was not an actual continent in the Arctic?
a. John Murray
b. Fridtjof Nansen
c. Robert E. Peary
d. Charles Wyville Thomson
ANS: B
Fridjtof Nansen was able to prove there was no continent in the Arctic, but it did not come easily. He
allowed his ship to be trapped in the ice for four years. The ice, along with the ship, drifted 1,650
kilometers over that period of time. Information can be found in the section Contemporary
Oceanography Makes Use of Modern Technolog
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Cyclone
?
The following questions refer to the above illustration of a middle-latitude cyclone. The dashed lines show the positions of the fronts six hours ago.
Which of the following terms refers to the lines that connect points of equal pressure change?
A. contours B. isobars C. isograds D. isallobars
Niagara Falls were formed _______.
a - during Precambrian time approximately a billion years ago b - so long ago that the river's knickpoint is now gone c - after a series of spectacular earthquakes which are still helping the falls evolve d - by humans as a result of the damming of the St. Lawrence river e - after the retreat of the Pleistocene ice sheets a few thousand years ago
Short duration, high intensity rainfall is associated most often with ____
a. a cold front b. a warm front c. continental polar air masses d. anticyclones e. stable air masses
Water and carbon dioxide combine to make a weak acid
a. true b. false