Volcano, an opening in the earth's crust from which lava flows, Hill, land higher than the land around it, with a rounded top; smaller than a mountain, River, a thin natural waterway that allows water to flow into a lake or ocean, Peninsula, thin strip of land that extends into a body of water, Valley, low land between hills or mountains with more of a sloping sides, Canyon, low land between hills or mountains with very steep sides, Lake, a large natural area of water surrounded by land, Mountain, land that is taller than the land around it, rocky ground, and usually comes to a peak, Plains, a natural area of flat land or gently rolling land, Island, area of land that is completely surrounded by water, Plateau, an area of land that is higher than the land around it, but it is flat, Deltas, form at the END of rivers caused by dropping off of sediments and rocks, Dunes, forms in dry areas or along sandy coast, Oceans, large bodies of SALT Water

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