1-Spheres of the Earth

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Phenomena

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An observable event that can be explained in science/nature

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Atmosphere

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The layers of gases that surround the Earth

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Biosphere

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All the living organisms (plants and animals) on the Earth

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Geosphere

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The solid earth/ground-all the rocks, mineral and soil

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Hydrosphere

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All the waters on the Earth's surface such as lakes and seas, and even clouds

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Hydrologic (water) Cycle

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Describes the continuous movement of water on, above and below surface of the Earth

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Climate

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The average weather conditions of an area over an extended period of time (ex: season)

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Climate Change

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Long-term changes in temperature and weather patterns (ex: global warming)

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Greenhouse Gases

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Gases that trap heat in the Earth's atmosphere (ex: CO2)

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Fossil Fuels

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Natural fuels such as coal or gas that are formed within the Earth from the remains of living organisms