Describe the times of year and times of day when most tornadoes occur in the United States.?
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ANSWER: About 70 percent of all tornadoes in the United States develop from March to July. The month of May normally has the greatest number of tornadoes (the average is about 9 per day), while the most violent tornadoes seem to occur in April, when vertical wind shear tends to be present as well as when horizontal and vertical temperature and moisture contrasts are greatest. Although tornadoes have occurred at all times of the day and night, they are most frequent in the late afternoon (between 3:00 P.M. and 7:00 P.M.), when the surface air is most unstable; they are least frequent in the early morning before sunrise, when the atmosphere is most stable.
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The "tragedy of the commons" refers to the ____.
A. overuse of privately held resources B. degradation of shared common resources C. human deaths resulting polluted shared resources such as air or water D. government over-regulation of fresh water use E. use of nonrenewable resources
Which of the following statements is true?
A. A coordinate system is based on a map projection. B. Map projection and coordinate system are unrelated. C. A map projection is based on a coordinate system.
Most organisms use water in
A) the form of rain. B) liquid form. C) solid form. D) gaseous form.
The pressure announced on last night's television weather broadcast was 29.92. Explain how this was measured and give the units. Would this be considered an unusually large or low pressure value?
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