How is the tail of a comet oriented? (Which way does it point?)
a. ?It points away from the sun.
b. ?It points toward the sun due to gravitational attraction.
c. ?It points back from the direction of travel.
d. ?It points in the direction of its afterburner.
e. ?It oriented randomly in space.
ANSWER: a
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Which of the following countries is the world's leading producer of pig meat?
A) United States B) Germany C) Brazil D) China E) Russia
What is the eventual fate of erosional beaches?
a. The sea cliffs and sea caves overrun the coastline. b. Marine erosion becomes less of a factor with the age of the beach. c. They become a depositional beach. d. They become submerged. e. Wave energy eventually erodes the underlying rock
Which of the following would NOT be likely if global warming continues?
a. more intense rainfall and more serious droughts in semi-arid regions b. a rise in temperatures in most polar regions c. expansion of the ranges of tropical diseases into higher latitudes d. a general lowering of mean sea level e. changes in ocean currents resulting from changes in salinity
Match the term with the most appropriate description.?
A. ?the use of machines to dig large pits for removal of metal ores, sand, gravel, or stone B. ?extraction of mineral deposits that lie in large horizontal beds on flat terrain C. ?used to mine coal and various mineral resources on hilly or mountainous terrain by cutting a series of terraces into the side of the hill D. ?explosives are used to remove the upper part of the terrain to expose seams of coal E. ?underground mineral resources are removed through tunnels and shafts