| A | B |
|---|
| climate | the pattern of weather over a long period of time |
| economic activity | any action that relates to the making, buying, and selling of goods and services |
| landform | any natural feature of Earth's surface that has a distinct shape. Landforms include continents, mountain ranges, hills, valleys, and canyons. |
| physical feature | any natural characteristic of Earth's surface, such as landforms and bodies of water |
| population density | the average number of people who live in a unit of area, such as a square mile. Population density measures how crowded an area is. |
| region | an area defined by one or more natural or cultural characteristics that set it apart from other areas. |
| thematic map | a map that shows a particular theme, or topic |
| vegetation | all the plants and trees in an area |
| physical map | a map that shows natural landforms and waterways on Earth's surface. |
| South Pole | the point on Earth located at 90 degrees south latitude. |
| grid | a pattern of lines that form squares |
| index | an alphabetical listing of place names on a map and the grid squares in which they are found. |
