| Term | Definition |
|---|
| Erosion | the movement by water, ice or wind of rocky materials to another location. |
| Weathering | the process of breaking rocks into smaller pieces through heat, water or other means. |
| Landforms | The shapes of land on earth's surface. |
| River | a long body of water that flows over land. |
| Floodplain | a land form of level ground built by sediment deposited by a river or stream. |
| Archipelago | A large group of islands. |
| Ocean | The body of salt water that covers most of the Earch. |
| Desert | A region of little rainfall where few plants and animals live. |
| Topography | Shape, height and arrangement of landforms in a certain place. |
| Gulf | A large body of salt water that is partly enclosed by land. |
| Butte | An isolated hill with sloping sides and a small flat top. |
| Iceberg | Large chuncks of ice that breakaway from glaciers and ice shelves and drift into the ocean. |
| Plain | A nearly flat area on Earth's surface. |
| Continent | One of the Earth's 7 great land masses. |
| Marsh | A low, wet area where grasses, rushes and cattails grow. |
| Volcano | A hole in the Earth's crust through which lava, gasses and ash are released. |
| Sea | A body of salt water that is partly enclosed by land. |
| Mesa | A raised area with steep sides and a large, flat top. |
| Canyon | A deep valley with steep sides. |
| Alluvial Fan | A fan-shaped landform created by deposits of sediment at the base of a mountain. |
| Atoll | Rings of coral surrounding lagoons. |
| Waterfall | A stream of water that falls from a high place. |
| Cape | A point of land that juts out into the water. |
| Fjord | Narrow, deep inlets of the sea, set between high, rocky cliffs. |
| Glaciers | Large slow moving sheets or rivers of ice. |
| Jungle | An area of thick tangeled plants, usually found near a river or swamp. |
| Plate Tectonics | The theory that Earth's surface is divided into several major slowly moving plates or pieces. |
| Strait | A narrow passageway that connects two large bodies of water. |
| Tundra | A cold, dry treeless region where mosses, grasses and lichens grow. |
| Mountain | A high area of land with steep sides and a sharp peak. |
| Valley | An area of low land between mountains or hills. |
| Peninsula | An area of land that sticks out into a body of water. |
| Subduction | The movement of one of Earth's heavier tectonic plates underneath a lighter tectonic plate. |
| Fault | The fractured surface in Earth's crust where a mass of rock is in motion. |
| Delta | Landforms created by the desposit of sediment at the mouth of Rivers. |
| Earthquakes | Sudden, violent movements along a fracture in the Earth's crust. |
| Lava | Magma that has broken through the crust to Earth's surface. |
| Terraces | Horizontal ridges built into the slopes of steep hillsides to prevent soil loss and aid farming. |
| Bay | Body of water that extends into the land. |
| Plateau | A flat area of land that is higher than the land around it. |
| Channel | A body of water that connects two larger bodies of water. |
| Isthmus | A narrow strip of land that connects two larger land areas. |
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