M2A1 Essay

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EXERCISE 10 PROBLEMS – PART I The following questions are based on the maps of average January sea-level temperatures (Figure 10-1) and average July sea-level temperatures (Figure 10-2): 1. Is the temperature contrast between the equator and the Arctic region greatest in the winter or summer? Temperature contrast between the equator and the Arctic region is greatest in the winter. Temperatures near or at the equator only change a few degrees between winter and summer, while the Arctic region changes up to 40 degrees between the seasons. 2. (a)Were latitude the only control of temperature, the isotherms would run straight across the maps from east to west. Describe one region of the world where this hypothetical isotherm pattern is actually observed: The region of the world in near the equator. (b)Why is the hypothetical pattern seen here? It falls in the tropical zones. The temperatures of these zones are consistent all year round. 3. (a) Is the influence of the cool ocean currents on coastal temperatures more pronounced in summer or winter? It is more pronounced in the summer. (b) Why? They can keep summer temperatures way down, in the winter, they often keep temperatures from getting too cold. 4. (a) Comparing the January map with the July map, describe one region of the world that exhibits a large annual temperature range (the difference between the January and July average temperatures): Siberia. (b) What explains this large annual temperature range? Siberia is located near the eastern end of the world’s largest land mass (Asia) and blocked by mountain ranges from moderating oceanic influences. (c) Describe one region of the world that exhibits a small annual temperature range. The areas between the Tropic of Capricorn and Tropic of Cancer or equatorial belt. (d) What explains this small annual temperature range? Small variance in

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