PHYSICAL GEOGRAPHY. GENERAL MAP QUESTIONS. —0£9300—_ Voleanoes and Earthquakes. Describe the volcanic districts of the Pacific Ocean. In what portions of these districts are voleanoes most numerous ? Describe the volcanic districts of the Indian Ocean. In what direction do most of the lines of fracture in this ocean extend? Describe the volcanic districts of the Atlantic. Where are submarine eruptions most numerous in this ocean ? Describe the earthquake district of the Mediterranean Sea and Central Asia. What other portions of the world are especially liable to earthquake shocks? Name the parts of the world shaken by the great earth- quake of Lisbon, in 1755. Oceanic Areas and River-Systems. What two oceans receive the drainage of the greatest areas of the continents? State, from a careful inspection of the direction in which the principal river-systems flow, the direction of inclina- tion of the principal slopes of the continents. Observe that in most of the continents there is a long gentle slope and a short abrupt slope; state the general direction of each of these slopes. Locate the principal systems of inland drainage in each of the continents. Name the principal lakes and rivers belonging to the larger of these systems. Describe in general the river-systems of the Atlantic, or the rivers draining into the Atlantic. Describe the river- systems of the Pacific. Of the Indian. Of the Arctic. Enumerate the five largest rivers belonging to each of these river-systems. Name the principal rivers of the world which have delta mouths. What are the land and water boundaries of each of the five oceans? Ocean Currents. What is the general direction of the equatorial ocean currents? Explain the cause of this general direction. What exception can you find to it? What is the general direction of the Arctic currents? Of the Antarctic currents? What are the causes of these general directions ? Describe the principal currents of the Atlantic; of the Pacific; of the Indian Ocean. Locate the principal grassy seas. Explain the cause of these seas. Name the principal warm ocean currents; the principal cold ocean currents. Name some cold currents. which powerfully affect the climate of different parts of the earth? Name some warm currents which powerfully affect the climate. In what respects do the general directions of the cur- rents in each of the central oceans resemble one another? Name the points of resemblance between the Gulf Stream and the Japan Current. Isothermal Lines and Physical Zones. Point out the most striking deviations in the directions of the isothermal lines from the parallels of latitude. Explain in each case the main cause of these deviations, In what part of the world do the isothermal lines coin- cide most nearly with the parallels? Trace on the map the isothermal line of 79° Fahr. Of 32° Fahr. Of 40° Fahr. In-what parts of the world is the highest temperature found during the month of July? What is the temperature of the greatest cold of Jannary ? Where is it found? What is the mean temperature of London for January ? For July? What other large cities have nearly the same mean July or January temperature as London? What is the mean temperature of Bombay for January ? For July? What other large cities have nearly the same mean July or January temperature as Bombay? Point out the northern limit of drift ice. The southern limit. Why is it advantageous fora vessel sailing from England or America vid the Cape of Good Hope to maintain an easterly direction both going and returning? Describe the boundaries of the physical torrid, tem- perate, and frigid zones. Name the principal countries which lie wholly or in part in each of these zones. Winds, Rain, and Ocean-Routes. State the boundaries of each of the wind zones. What is the general direction of the wind in each of these zones? Name the principal monsoon regions of the world. Enumerate the principal mountain and desert winds. What is the direction of the rotation of the wind in the cyclonic storms of the northern hemisphere? Of thesouth- ern hemisphere? Name the principal storm-regions of the world. Describe the characteristic rainfall in each of the princi- pal wind zones. What would be the general route of a vessel in sailing from America to Europe, and back again? From Europe to San Francisco? ; What two sailing routes are there from Europe to Aus- tralia or India ? Vegetation. Give the boundaries of each of the plant zones. State the countries or portions of countries which lie in each of these zones. Name some of the useful plants of each of these zones. Point out on the map the northern limit of trees. The southern limit. Name the portions of the world from which valuable timber is obtained. What are the principal tea- and coffee-growing countries of the world? Where are the principal forests?