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Alternative Energy & Fossil Fuels

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Across
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Layered rock formed when sediment builds up and is cemented together
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A fossil fuel burned to create heat for homes and cooking. it is formed in the same way that oil is formed and usually found
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The process where weathered and eroded material is dropped or deposited
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Fuels formed over millions of years from the remains of ancient plants and animals ; examples : coal, oil (petroleum) and natural gas
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The method or steps by which a substance is formed
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Early form of coal that is made from decaying swamp plants that have been heated and pressurized under many layers of sediment
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Remains or imprint of a plant or animal left in sediments and harden into rock ; found in sedimentary rock
Down
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To break down by natural processes
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Death of an entire species
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Intermediate (middle) form of coal; brownish black in color, and visible texture of wood is often distinct
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Process by which overlying pressure from rocks and soil reduces the volume of sediments [squeezing]
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The process of binding and hardening of sediments into hard rock (gluing)
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A fossil fuel that is made into gasoline, jet fuel, and other fuels. is made from dead sea animals
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A fossil fuel burned in power plants to create heat and electricity. made from dead plants over millions of years