| A | B |
| Western Hemisphere | includes North & South America |
| Eastern Hemisphere | includes Europe, Asia, Africa, & Australia |
| Australia | Smallest continent |
| Asia | largest continent |
| Africa | 2nd largest continent |
| Arctic Ocean | coldest ocean |
| Australia | continent with only one country |
| Pacific Ocean | largest ocean |
| Indian Ocean | smallest ocean |
| Arctic Ocean | smallest ocean |
| Atlantic Ocean | separates Europe and North America |
| Atlantic Ocean | most heavily traveled ocean |
| equator | imaginary line encirling the earth between the North & South POle |
| geography | study of the earth's surface |
| sea | large aarea of saltwater smaller than an ocean |
| bay | body of water smaller that a sea and reaching into the land with a wide opening |
| gulf | part of an ocean or sea which reaches into the land with a narrow opening |
| lake | inland body of water usually fresh |
| river | natural flow of water emptying into another body of water |
| source | place where a river begins |
| mouth | place where the river flows into a larger body of water |
| delta | land deposited at the mouth of a river |
| upstream | direction from which a river flows |
| downstream | direction towards which a river flows |
| channel | deep, narrow body of water connecting 2 larger bodies of water |
| canal | narrow, man-made channel fo water that joins other bodies of water |
| desert | land too dry too cold to grow many plants |
| oasis | desert area made fertiel by the presence of water |
| mountain | raised area fo the earth's surface that rises somewhat abruptly and is larger than a hill |
| mountain range | long row of mountains |
| valley | lowland between hills or mountains |
| sea level | level of ocean waters |
| altitude | elevation; height above sea level |