CONTINENTS; OCEANS 201 



well as by the eastern route. The long and often 

 dangerous voyage around either the Cape of Good Hope 

 or Cape Horn is a thing of the past. 



EXERCISES 



1. What is the width in degrees of longitude of all lands lying 

 between the tropics? 



2. What is the width of ocean lying between the tropics? 



3. How does the extent of ocean compare with that of land in 

 the south temperate zone? 



In answering Nos. 4-7, suppose that all the continents were 20 

 farther south than they are. 



4. What countries would the equator then cross? 



5. Would any continent extend into the antarctic zone? 



6. Would the area of tropical land be increased or diminished? 



7. How would conditions in Alaska be changed? 



8. What countries of South America does the meridian of Boston 

 cross? 



9. In what direction from New York is the main part of South 

 America? 



10. What is the only isolated continent? 



11. Why is the Red Sea warmer than the Indian Ocean? 



12. What changes of level are shown by the ruins of Pozzuoli? 

 Show how these changes are known. 



13. To what level can sediment be deposited in ocean water? 



