100 PHYSICAL GEOGRAPHY. Name the principal wind zones of the earth. Explain, in full, the origin of land and sea breezes. In what respect do monsoons resemble land and sea breezes? Name the principal monsoon regions of the earth. Describe the origin of desert winds? Name the winds which are caused by the desert of Sa- hara. By the deserts of Arabia and Nubia. What are storms ? . What are cyclones? Where do they originate? In what direction does the wind rotate in the northern hemisphere? In the southern hemisphere? In what di- rection does the storm progress in each hemisphere? Ex- plain the cause of the rotation of the wind. What are hurricanes? Typhoons? Explain the formation of a water-spout. Is the water in the upper part of a water-spout salt or fresh? Name the important facts which have been discovered respecting the north-easters and other severe storms of the United States. MAP QUESTIONS. —— 0294 0o———_ Trace on the map of isothermal lines the areas of great- est heat in the eastern hemisphere. In the western hemi- sphere. Show from the map of the isothermal lines. wherein the physical torrid zone differs in position from the mathematical torrid zone. In which hemisphere do the isothermal lines deviate more from the parallels of latitude, in the northern or the southern ? Trace on the map of the isothermal lines the limit of the Arctic drift ice. Of the Antarctic drift iee. What are the mean summer and winter temperatures of Sitka? Of Quebec? What causes exist to render the climate of Sitka so. much warmer than that of Quebec, notwithstanding the difference of their latitudes? What are the mean summer and winter temperatures of Mexico, Madras, Singapore, Berlin, London, Philadelphia,— Algiers, Melbourne, and Rio Janeiro?” What instances can you find on the map of the in- crease in the mean annual temperature of places through the influence of ocean currents? Of winds? Of rain- fall ? ~Name similar instances of places whose mean annual temperature is lowered by such causes. Trace on the map of the winds the boundaries of the various wind zones. State the direction of the wind in each of these zones. Point out the limits of the monsoon regions of the world. What hot winds blow over Arabia? Over Egypt? Over Greece and Italy? Over Guinea? What cold wind blows over Texas? Describe the path of the West India hurricanes. How far to the north do these storms extend ? Describe the path of the Mauritius hurricanes. Where do these storms criginate? How far to the south do they extend ? Describe the region of the typhoons. Describe the route a vessel would take in sailing from America to Europe. From New York to San Francisco. From America to Australia.