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Fossil Fuels

Fossil Fuels . by : Rachel 5 th grade science November 8, 2011. Sedimentary Rocks. Broken bits of rocks end up in rivers, streams and lakes. Over time, sand and mud cover the rocks at the bottom of the water Layers of sediment turn into sedimentary rock

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Fossil Fuels

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  1. Fossil Fuels by: Rachel 5th grade science November 8, 2011

  2. Sedimentary Rocks • Broken bits of rocks end up in rivers, streams and lakes. • Over time, sand and mud cover the rocks at the bottom of the water • Layers of sediment turn into sedimentary rock • Examples: Sandstone, shale and limestone

  3. Fossil Fuels • Fossil fuels are formed by a natural process • They are made deep in the earth from plants and animals that have died • Example: Coal, Oil and Natural Gas • Supply 90% of the world’s energy

  4. Coal • Plants die and decay into a spongy substance called Peat • The peat is covered with sand and mud • Water squeezes out and the carbon increases and coal is formed • Coal has to be mined out of the earth

  5. Oil • Comes from plankton which died and sank to the bottom of the sea • Gets covered with sand and mud and is pressed together, turning into rock • Bacteria munches on the plankton and leaves oil behind

  6. Natural Gas • Comes from plankton which is covered with sand and mud • It is pressed together and turns to rock • Bacteria eats the plankton and leaves a gas behind • Usually found near oil underground

  7. Website: http://www.ecokids.ca/pub/eco_info/topics/energy/ecostats/index.cfm Google images

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