| A | B |
|---|
| hydrologic cycle | the continous circulation of water between the atmosphere, oceans, and Earth |
| drainage basin | an area drained by a major river and its tributaries |
| ground water | the water held in the pores of rock |
| water table | the level at which the rock is saturated |
| landforms | naturally formed features on the surface of the earth |
| volcano | an opening in the earth, usually raised, through which gases and lava escape from the earth’s interior |
| strait | a narrow channel connecting two larger bodies of water |
| cape | a point of land extending into an ocean or lake |
| bay | part of an ocean or lake partially enclosed by land |
| delta | a triangular area of land formed from deposits at the mouth of a river |
| island | a body of land completely surrounded by water |
| oasis | a spot of fertile land in a desert, fed by water from wells or underground springs |
| valley | low land between hills or mountains |
| glacier | a large ice mass that moves slowly down a mountain or over land |
| mesa | a wide, flat-topped mountain with steep sides |
| steppe | a wide, treeless grassy plain |
| canyon | a narrow, deep valley with steep sides |
| plateau | a broad, flat area of the land higher than the surrounding land |
| butte | a raised, flat area of land with steep cliffs, smaller than a mesa |
| swamp | a lowland region that is saturated by water |
| continental shelf | The earth’s surface from the edge of a continent to the deep part of the ocean |
| relief | difference in elevation of a landform from its lowest point to its highest point |
| topography | the combination of the surface shape and composition of the landforms and their distribution in a region |
| river mouth | the place where a river flows into a lake or ocean |
| cataract | a step-like series of waterfalls |
| ithmus | narrow piece of land connecting two larger pieces of land |
| pennisula | land surrounded by water on three sides |
