| A | B |
|---|
| landform | shapes of the surface of Earth |
| plain | large area of flat land |
| geography | study of Earth |
| border | line that divides one place from another |
| plateau | large area that rises steeply above the surrounding land |
| valley | low land between hills or mountains |
| Ice Age | period of extremely cold weather |
| glacier | huge, thick sheet of ice |
| moraine | line of low hills where the glacier stopped |
| till | mix of soil and rocks dropped off by a glacier |
| drumlin | smoothly rounded hills carved by a glacier |
