State two reasons why many scientists question the value of cloud seeding for enhancing precipitation
What will be an ideal response?
Answer: Any two of the following:
(i) ethical concerns
(ii) legal issues
(iii) inconsistent results
(iv) cost-effectiveness
(v) cloud seeding based on limited cause-and-effect knowledge
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Evaluate this statement. "Victims of the Indian Ocean tsunami on December 26, 2004, might have been saved if they realized that an extremely low water level at the shore was the trough of a huge wave."
A) This statement is true. B) This statement is false. Tsunamis have very long wavelengths but relatively short wave heights. C) This statement is partially true. There is a low water level before a tsunami hits, but it is caused by the rolling movement of the wave, not a wave trough. D) This statement is false. Victims would not have had time to run before the wave hit.
Discuss how major river and rail corridors have shaped the geography of population and economic development in the region. Provide specific examples
What will be an ideal response?
The Leaning Tower of Pisa leans because
A. the designers wanted it that way. B. the tower was built on unstable clay-rich soils. C. modern construction nearby has disturbed the foundation. D. the structure itself was poorly built.
Which of the following is true about how waves form and break upon the shore?
A) Most waves form from upwelling of deep waters. B) Waves get smaller as wind speed increases. C) Waves begin to change when they reach water shallower than wave base. D) Waves break in a counterclockwise direction because of rotation of the Earth. E) None of these are correct.