In which of the following locations would thunderstorms be LEAST likely to form?
A. the tropics
B. mountain ranges
C. the interior of an mT air mass
D. northern Canada
Answer: D
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Devils Tower was formed by
A. accumulations of windblown sand. B. solidification of a magma chamber. C. sedimentation from river deposits.
The accuracy of hurricane forecasting
A) has improved over the past decade. B) has declined over the past decade. C) will never be good enough to save lives. D) depends greatly on the size of the storm. E) depends greatly on the strongest wind speeds in the storm.
_______________ comes in many pale shades of color, is very silica rich, and produces very thick, stiff flows
Fill in the blank with correct word.
Which of the following accurately describes 18O/16O ratios of the worlds oceans?
A) Because 18O evaporates more readily than 16O, the oceans have a higher relative abundance of 16O during warm periods and a more balanced ratio when there is less evaporation. B) The higher the ratio of oceanic 18O/16O, the warmer the temperatures because the 16O will have been mostly evaporated from ocean waters. C) During periods of colder temperature 16O is locked up in snow and ice and the oceans have a higher preponderance of 18O; during warmer periods the isotope ratio is lower. D) The 18O/16O ratio is low during colder temperatures because temperatures are too low for evaporation to be effective and both isotopes remain in the ocean.