How much more energy does a magnitude 8 earthquake release than a magnitude 7 earthquake?
a. 2 times more
b. 10 times more
c. 30 times more
d. 900 times more
e. 27,000 times more
C
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Streamlined eolian erosional landforms that taper in the downwind direction:
a. have slip faces. b. lie at the angle of repose. c. are yardangs. d. are drumlins. e. are buttes.
Which of the following is true about the Earth's atmosphere?
A) It allows gamma rays and X-rays reach the surface. B) The ozonosphere and ionosphere shield the surface from harmful radiation. C) Variable gases are the dominant gases in the atmosphere. D) It is denser at higher altitudes.
Why do scientists think that lithosphere has to be destroyed somewhere on or in the earth?
A) Lithosphere is created at divergent boundaries and the earth is not getting any larger. B) The earth is getting smaller as the new oceanic crust cools and contracts. C) The moon is moving away from the earth and this would not happen if the earth had more lithosphere to increase its mass. D) There is not enough lithosphere on the earth to account for what has been produced in the last 200 million years.
Cold fronts that move into the United States from the east, or northeast, are called ____ fronts
A) eastern B) back door C) stationary D) warm-type occluded