What prevented explorers like Christopher Columbus from finding precise longitude?
a. Calculations necessary for determining longitude
b. The lack of accurate pendulums
c. A durable and precise clock
d. Longitude was not the issue, latitude was the problem
ANS: C
The key to longitude problem was the invention of a sturdy clock that remained consistent during
weather changes that would occur while at sea. Prior to the chronometer, clocks were propelled by the
use of a pendulum which was not practical at sea. Information can be found in the section Voyaging
Combined with Science to Advance Ocean Studies
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The low-level jet stream reaches its maximum strength at night
a. true b. false
Ancient climate is known as
A) the Little Ice Age (LIA). B) the Medieval Warm Period (MWP). C) paleoclimate. D) weather.
Amphibians were the first organisms to live on land
a. True b. False
Why is infinite population growth not possible?
A. Water supplies are stretched to the limit in many places. B. Topsoils are being lost at an alarming rate. C. Supplies of crude oil and gas are in decline. D. All of these choices are correct.