Landform - A solid feature of Earth's crust., Erosion - The movement of weathered materials., Glacier - A large, moving body of ice. It forms in cold places where snow and ice pile up year after year., Valley - A low, narrow area between hills or mountains., Plateau - A plain that is higher than the land around it., Ocean - The salt water that covers almost three-fourths of the Earth's surface., Coast - Land next to the ocean., Volcano - An opening in Earth's crust. Pressure inside Earth can force hot, melted rock up through the hole., Mountain - A landform high above the land around it., Lake - Forms when the flow of water slows enough to fill an area., Hill - A high place on Earth's surface, but not as high as a mountain. These often have rounded tops., Plain - A large, mostly flat area., River - A large natural stream of water., Lava - Magma that flows onto the Earth's surface from a Volcano., Earthquake - Sudden shifts of the Earth's crust that causes vibrations that shake the ground., Magma - Hot melted rock that collects within the layer below Earth's crust.,

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