| A | B |
| ground water | water found beneath Earth's surface |
| pangaea | supercontinent from 200 million years ago |
| frozen | most of Earth's fresh water is ____. |
| gulf | a large area of ocean partly surrounded by land |
| peninsula | land surrounded by water on three sides |
| the seven continents | Europe, Antarctica, Asia, Africa, Australia, North America, South America |
| landforms | features formed by physical forces |
| the five oceans | Arctic, Pacific, Atlantic, Indian, Southern |
| mountain | a landform that rises at least 2,000 feet above land |
| plain | a large area of flat or gently rolling land |
| island | land surrounded by water |
| valley | land between hills and mountains |
| desert | dry land with no trees |
| glacier | large, slow-moving block of ice |
| lake | large body of water surrounded by land |
| glacier, lake, river, stream | name a source of fresh water |
| ocean, sea | name a source of salt water |