| A | B |
|---|
| harbor | a sheltered place along a coast where boats can dock |
| lake | water surrounded by land |
| mountain | a landmass that rises well above its surrounding area, generally steep and rocky sides toward the top |
| source | a place where a river begins |
| coastline | the land next to an ocean or large lake |
| border | a line that people agree on that divides one place from another |
| landform | any of the shapes that make up the Earth's surface |
| ocean | a large body of salt water |
| mouth | the place where a river empties into a large body of water |
| river | flowing water that empties into a larger body of water |
| geography | The study of the earth and the way people, plants, and animals live on and use it. |
| island | Land completely surrounded by water. |
| valley | The low land between hills or mountains, often with a river at the bottom. |
