What does the term mesocyclone refer to in reference to a tornado?
A) a very large tornado
B) a high-altitude tornado
C) the rotation of the updraft in the parent thunderstorm
D) a false-alarm tornado warning
C
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Just after an alpha particle leaves the nucleus, would you expect it to speed up? Why?
A) No. Once the alpha particle leaves the nucleus it is slowed by the repulsion of the next closest atom's nucleus. B) No. As the alpha particle leaves the nucleus it is slowed by the constant attraction of the electrons surrounding the nucleus. C) Yes. Once the alpha particle leaves the nucleus there are no more forces acting on it and it therefore accelerates. D) Yes. Once the alpha particle leaves the nucleus it accelerates because of mutual electric repulsion with the nucleus from which it escaped.
_______ provide the only record of prehistoric life. Fill in the blank(s) with the appropriate word(s)
What common rockfall feature is pictured at the base of this cliff at Devil's Postpile National Monument in the image shown above?
A. Debris flow B. Rockslide C. Talus slope D. Alluvial fan
Life expectancy is the
A. Probability that an individual will survive infancy B. Number of individuals in a population that survive in a given year C. Number of years an individual of a certain age will probably live D. Maximum life span that an individual of a given species could reach E. All of these are descriptions of life expectancy