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Alternative Energy & Fossil Fuels

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