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Published byCamron Shaw Modified over 9 years ago
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canyon canyon: a deep ravine between cliffs often carved from the landscape by a river over a long period of time
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delta delta: a large, flat area of land at the mouth of a river
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landform landform: a natural structure on Earth’s surface
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dune dune: a hill of sand that is deposited by the wind
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weathering weathering: the various processes that cause exposed rock to break down
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physical weathering physical weathering: the breakdown of rocks and soils through direct contact with heat, water, or ice
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erosion erosion: the movement of weathered materials by water, wind, or ice
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deposition deposition: the process in which materials eroded by water, wind, or ice are dropped in a new place
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mass movement: the downhill movement of rock and soil because of gravity mass movement
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sedimentary rock: a rock that formed when sediments were pressed and cemented together sedimentary rock
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cementing: sediments glued together by minerals dissolved in water cementing
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fossil: a remnant or trace of an organism from long ago, such as a skeleton or leaf imprint, embedded and preserved on the Earth’s crust fossil
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fossil fuel: a fuel that formed from the decayed remains of ancient plants and animals fossil fuel
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alternative energy: any energy from a source that does not use up the Earth’s natural resources or endanger our environment alternative energy
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solar energy: energy from the sun that is converted into thermal or electrical energy solar energy
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wind energy: air in motion wind energy
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hydroelectric energy: electricity that is generated by water power hydroelectric energy
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geothermal energy: energy from within the Earth geothermal energy
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biofuels: fuels that can be produced using organic materials made from plants and animals biofuels
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force: a push or pull force
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gravity: the force that pulls objects toward each other gravity
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friction: a force between two surfaces rubbing against each other; friction works against motion friction
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magnetism: a force that pulls magnetic materials across a distance magnetism
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