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KEY Find the definition or description of all landforms and write them here. Draw or find a picture of each landform. You must choose 7 of the 15 landforms for your project. Plateau – a flat, raised area usually formed when a plain is uplifted at fault lines or during mountain-building. Mountain – rises high above the surrounding area usually formed at converging plate boundaries. Plain – a flat, level surface usually smoothed by wind and erosion. Canyon – a long narrow valley with high cliffs on each side often formed slowly by a river or wind eroding away softer rock or by the movement of a glacier. Cliff – steep face of rock and soil which may be formed by erosion or breaking and uplifting at a fault line. Stalagmites – rock shaped like upside-down icicle that builds up on the floor of a cave because of water dripping down from the ceiling. The water contains minerals which, very slowly, form layers of minerals as the water evaporates. Stalactites – rock shaped like icicles that hang from the roof of a cave. They are formed when water drops seep through the ceiling and evaporate, leaving minerals behind. Cave – hollow place inside the earth, often an opening in the side of a hill that forms when wind and water erosion wash out softer rock. Delta – triangle-shaped piece of land at the mouth of a river formed when soil is deposited at the mouth of a river as its velocity decreases. Valley – low land lying between hills or mountains that may be formed many ways. It may just be a low area between hills or it may be caused by erosion or pumping oil or water out of the ground. Alluvial fan – fan-shaped deposit of earth material from where a stream flows from a steep slope onto flatter land. Levee – an embankment along a stream that protects land from flooding – can be natural or man-made. Peninsula – body of land that is surrounded by water on three sides. This is caused by plate shape or tectonic movement. Saying this may be formed by continual deposition such as a delta over time would be a possible answer. Moraine – large accumulations of rock debris piled up by glaciers. Volcano – mountainous vent in the Earth’s crust. May spew out lava, ashes, and hot gases from deep inside the Earth. Volcanoes form when plates collide and the subducted plate melts and the resulting lava comes to the surface through cracks and fissures.