» 



1918 

 GEOGRAPHY 



Friday, June 21 2 p.m. Two hours 



No extra credit will be given for more than the required number of questions. 



Group I 

 (Answer one question from this group.) 



1. If the earth's axis were inclined 30 degrees away from a perpendicular to 



the plane of its orbit, what would be (a) the latitude of the Arctic Circle, 

 (b) the width of the Temperate zones, (c) the width of the Torrid zone ? 



2. What difference is there in the positions of earth, sun, and moon during full 



moon and during a total eclipse of the moon ? What phenomenon observ- 

 able during every eclipse of the moon indicates the spherical form of 

 the earth? 



Group II 

 {Answer one question from this group.) 



3. Account for the fact that the water at the bottom of the Gulf of Mexico has a 



temperature about 4° F. higher than the water of the adjacent open ocean 

 in the same latitude at the same depth. Name another body of water 

 connected with the ocean that exhibits a similar phenomenon. 



4. Why is the harbor of Hammerfest, Norway, 76° N., not closed by ice in 



winter ? Why would it probably be closed by ice if the continent of South 

 America were shifted 8° farther north ? 



Group III 

 {Answer two questions from this group.) 



5. State two places in the Northern Hemisphere where the isotherm of 40° F. 



bends distinctly to the north, and two places where it bends distinctly to 

 the south, on the isothermal chart of the world for January. Give the 

 reason in each case. 



6. What atmospheric conditions are responsible for such disastrous inundations 



of low coasts as occurred at Galveston, Texas, in the fall of 1900 ? 



7. What are the causes that determine the directions of (a) the trade winds, 



{b) the prevailing westerlies ? 



(SEE NEXT PAGE) ^ 



y9 



