Explain flood probability estimates
What will be an ideal response?
Floods are rated statistically for the probability that a flood will occur sometime during a given interval. This is based on historical trands. For instance, a 100-year flood has a probability of occurring 1 time in 100 years or a likelihood of 1% in any given year. A 50-year flood has a probability of occurring 1 time in 50 years, 2 times in 100 years, or a likelihood of 2% in any given year. A 25-year flood is one that has a probability of occurring 1 time in 25 years or 4 times in 100 years, or a likelihood of 4% in any given year. A 10-year flood has a probability of occurring 1 time in 10 years, 10 times in 100 years, or a likelihood of 10% in any given year. etc.
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Use the two maps in Figure 4.5 to plot a great circle route between San Francisco (west coast of the United States, where you can see small details of San Francisco Bay) and London (southern England at the 0° prime meridian). The straight line on the gnomonic projection will show the shortest route between the two cities. Transfer the coordinates of this route over to the Mercator map and connect with a line plot to show the route’s track. Note the route arching over southern Greenland on the Mercator.
What will be an ideal response?
Which of the following explains why thunderstorms along cold fronts are more severe than thunderstorms along warm fronts?
A. Uplift is more rapid along cold fronts. B. Cold air has a greater capacity for moisture. C. Cold fronts move more slowly than warm fronts. D. There is greater turbulence ahead of cold fronts due to the higher air pressure.
Earth is composed of three concentric layers. What are they, and how do they differ?
What will be an ideal response?
A catalytic converter increases the amount of carbon dioxide emitted by an automobile. Is this good news or bad news?
A. good news because it means more noxious chemicals are not being emitted B. bad news because the carbon dioxide contributes to acid rain C. good news because plants thrive on carbon dioxide D. bad news because carbon dioxide contributes to global warming