Variations of wind speed and direction with altitude is known as
A) supercells.
B) convection.
C) wind shear.
D) convergence.
C
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Which of the following statements about fission is true?
A. The fragments of a fusion reaction are always the same size. B. Bombarding a nucleus with neutrons always leads to fission. C. The amount of energy released in the fusion of small nuclei is very large. D. The amount of energy released in the fission of large nuclei is very large. E. none of the above
How much of Earth's surface is covered by glaciers?
A)1% B)2% C)5% D)10% E)20%
Which of the following conditions led to the 1993 flood in the midcontinental United States?
A. an unusual amount of rainfall caused by the after effects of Hurricane Andrew B. the jet stream locked in place over North-Central Plains for an unusually long time C. one unusually large rainstorm over Iowa, Kansas, Nebraska, and Minnesota D. an El Niño moving over the Upper Midwest E. the jet stream moving north and south more rapidly than normal
Salinity of seawater is approximately equal to the total dissolved salts in seawater expressed as grams of salt per kilogram of seawater.
Answer the following statement true (T) or false (F)