By which of the following methods have scientists tried to modify hurricanes?
A. seeding the hurricanes with silver iodide
B. igniting huge smoke bombs in the eye of the storm
C. putting an oil slick over the ocean water and igniting it
D. seeding the hurricanes with hair-thin pieces of aluminum called chaff
Answer: A
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Who was the first person to suggest that all of the continents had originally been joined together as the supercontinent
Pangaea? a. Alexander du Toit b. Frank Taylor c. Alfred Wegener d. Edward Suess e. Harry Hess
What percentage of the world's energy supplies is consumed by the U.S.?
a. 5% b. 10% c. 28% d. 75% e. 90%
In regard to the Southern Oscillation, when
A. pressures are low in Darwin, pressures are also lower in Tahiti. B. pressures are high in Darwin, pressures are lower in Tahiti. C. pressures are high in Tahiti, pressures are also high in Darwin.
Which Russian leader defeated the Tatars at the battle of Kazan?
A) Nicholas II B) Catherine the Great C) Peter the Great D) Stalin E) Ivan the Terrible