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Mountain	A very high, steep piece of land that rises above the land around it		geo-landforms-vocabulary
Hill	A rounded piece of land higher than the land around it, but lower than a mountain		geo-landforms-vocabulary
Valley	Low land between hills or mountains		geo-landforms-vocabulary
Plain	A large, flat area of land		geo-landforms-vocabulary
Plateau	A high, flat area of land		geo-landforms-vocabulary
Mesa	A flat-topped hill with steep sides, found in dry places		geo-landforms-vocabulary
Butte	A small, steep hill with a flat top, narrower than a mesa		geo-landforms-vocabulary
Canyon	A deep valley with steep rock sides, often cut by a river		geo-landforms-vocabulary
Gorge	A narrow, steep-sided valley		geo-landforms-vocabulary
Cliff	A high, steep rock face		geo-landforms-vocabulary
Cave	A hollow place in rock or a hillside		geo-landforms-vocabulary
Volcano	A mountain with an opening where hot melted rock can erupt		geo-landforms-vocabulary
Crater	A bowl-shaped hole at the top of a volcano or made by an impact		geo-landforms-vocabulary
Glacier	A huge, slow-moving river of ice		geo-landforms-vocabulary
Iceberg	A large piece of ice floating in the sea		geo-landforms-vocabulary
Desert	A very dry place that gets little rain		geo-landforms-vocabulary
Dune	A hill of sand built by the wind		geo-landforms-vocabulary
Oasis	A place in a desert where water lets plants grow		geo-landforms-vocabulary
Prairie	A large grassland with few trees		geo-landforms-vocabulary
Tundra	A cold, treeless land where the ground below the top is frozen		geo-landforms-vocabulary
Savanna	A grassland with scattered trees in a warm place		geo-landforms-vocabulary
Forest	A large area covered with trees		geo-landforms-vocabulary
Rainforest	A thick forest in a warm place with lots of rain		geo-landforms-vocabulary
Swamp	Wet land covered with water and trees		geo-landforms-vocabulary
Marsh	Wet, soft land with grasses and reeds		geo-landforms-vocabulary
Wetland	Land that is soaked with water much of the year		geo-landforms-vocabulary
Peninsula	Land almost surrounded by water, joined to the mainland on one side		geo-landforms-vocabulary
Island	Land completely surrounded by water		geo-landforms-vocabulary
Archipelago	A group or chain of islands		geo-landforms-vocabulary
Isthmus	A narrow strip of land joining two larger land areas		geo-landforms-vocabulary
Cape	A point of land that sticks out into the sea		geo-landforms-vocabulary
Coast	Land along the edge of the sea		geo-landforms-vocabulary
Beach	A sandy or pebbly shore by the water		geo-landforms-vocabulary
Bay	Part of the sea that curves into the land		geo-landforms-vocabulary
Gulf	A large bay, partly closed in by land		geo-landforms-vocabulary
Strait	A narrow waterway that joins two larger bodies of water		geo-landforms-vocabulary
Channel	A wide strait or a deep path for water or ships		geo-landforms-vocabulary
Fjord	A long, narrow sea inlet with steep cliffs on both sides		geo-landforms-vocabulary
Harbor	A sheltered place where ships can stay safe		geo-landforms-vocabulary
Delta	Land formed where a river drops mud and sand as it reaches the sea		geo-landforms-vocabulary
Estuary	The wide mouth of a river where fresh water meets the sea		geo-landforms-vocabulary
Lake	A large body of water surrounded by land		geo-landforms-vocabulary
Pond	A small body of still water		geo-landforms-vocabulary
River	A large stream of water that flows to a lake or sea		geo-landforms-vocabulary
Stream	A small, narrow river		geo-landforms-vocabulary
Waterfall	Water falling from a high place over a cliff		geo-landforms-vocabulary
Spring	A place where water flows naturally out of the ground		geo-landforms-vocabulary
Source (of a river)	The place where a river starts		geo-landforms-vocabulary
Mouth (of a river)	The place where a river ends and flows into a sea or lake		geo-landforms-vocabulary
Tributary	A smaller river or stream that flows into a bigger river		geo-landforms-vocabulary
Watershed	Land where all the water drains into one river or lake		geo-landforms-vocabulary
Basin	A low area of land, often drained by a river		geo-landforms-vocabulary
Reef	A ridge of rock or coral near the surface of the sea		geo-landforms-vocabulary
Atoll	A ring-shaped coral island around a lagoon		geo-landforms-vocabulary
Lagoon	A shallow body of water cut off from the sea by a reef or sand bar		geo-landforms-vocabulary
Geyser	A hot spring that shoots water and steam into the air		geo-landforms-vocabulary
Foothills	Low hills at the bottom of a mountain range		geo-landforms-vocabulary
Mountain range	A long row of connected mountains		geo-landforms-vocabulary
Summit	The very top of a mountain		geo-landforms-vocabulary
Slope	A surface that is higher at one end than the other		geo-landforms-vocabulary
Badlands	Dry land worn by wind and water into strange shapes		geo-landforms-vocabulary
Continental divide	A ridge that sends rivers to opposite sides of a continent		geo-landforms-vocabulary
Sea level	The height of the ocean's surface, used as zero for measuring height		geo-landforms-vocabulary