| A | B |
|---|
| Main Idea | Earth's surface has many land and water features. |
| ocean | a large body of salt water |
| continent | a great area of land on Earth |
| landform | a feature of land on Earth's surface |
| crust | Earth's outmost layer |
| mantle | the layer of Earth below the crust |
| core | Earth's deepest and hottest layer |
| fresh water | water that is not salty |
| mountain | tallest landform that often has steep sides and a pointed top |
| valley | the low land between hills or mountains |
| canyon | a deep valley with steep sides - rivers often flow through them |
| plain | land that is wide and flat |
| lake | water that is surrounded by land |
| river | a large body of moving water |
| plateau | land with steep sides and a flat top - it is higher than the land around it |
| coast | land that borders the ocean |
| peninsula | land surrounded by water on three sides |
| island | land with water all around it |
| ocean floor | land below the ocean |
| continental shelf | a hugh plateau under the ocean at the end of a continent |
| abyssal plain | wide and flat plain that stretches thousands of kilometers across the ocean floor |
| trench | a canyon on the ocean floor |
| outer core | melted rock at near the center of the earth |
| inner core | solid rock at the center of the earth |
