Answer to Question 1
Answer: B
Answer to Question 2
Answer: Size: In contrast to tornadoes, whose diameters are typically measured in tens of meters, hurricanes are typically about 600 kilometers (350 mi) wide. Thus, the typical hurricane has a diameter thousands of times greater than that of a tornado. Remembering that the area of a circle is proportional to the square of its radius, and knowing that tornadoes and hurricanes are roughly circular, we see that the area covered by a hurricane is likely to be millions of times greater than the area covered by a tornado. Furthermore, a tornado exists only for a couple of hours at most, while a hurricane can have a lifetime of several days or even a week or more. Though hurricanes are usually about one-third the size of midlatitude cyclones, the pressure difference across a hurricane is about twice as great. They therefore have extreme horizontal pressure gradients that generate powerful winds: Average hurricanes have peak winds of about 150 km/hr (90 mph), and the most intense hurricanes have winds up to 350 km/hr (210 mph). Pressure: Sea-level pressure near the center of a typical hurricane is around 950 mb, but pressures as low as 870 mb have been observed for extremely powerful hurricanes. The weakest hurricanes have central pressures of about 990 mb. Lifespan: a hurricane can have a lifetime of several days or even a week or more.
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Vertical and Horizontal Changes in Pressure
Nonlinear increase in saturation vapor pressure with increase in temperature.
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