Formation Of Fossil Fuels Flashcards

1
Q

What are the main fossil fuels ?

A

Coal, oil and natural gas.

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2
Q

How was coal formed ?

A

plants use energy from sun + carbon dioxide to grow => plants die and fall down in swamp => sink to the bottom of muddy swamp => mud collects at bottom of swamp and stop plants from decaying => whole area is flooded by sea => layers of sand collect on sea bed => builds up to create enough pressure to turn sand layers to sandstone => mud layer to mudstone => heat from earth + pressure from mudstone + sandstone => turns dead plants to coal => mill year later coal burned for electricity in power stations => releasing harmful gases into atmosphere

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3
Q

How was oil and natural gas formed ?

A

Ocean plants use energy from sun + carbon dioxide in the water to live => animals in ocean get energy by eating those plants => plants + animals in ocean die => the ones that don’t get eaten fall onto seabed => storm/landslide happens => new layer of mud to form on top dead animals + plants => layers of sand build on top => pressure of sand layers => mud turn into mudstone => pressure of mudstone => dead plants + animals turn into oil and natural gas => mill years later oil + gas burned for electricity in power stations => releasing harmful gases into atmosphere

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4
Q

The basic overview of how fossil fuels where formed

A

Fossil fuels were formed millions if years ago from dead plants and animals that had turned into oil, gas and coal by immense heat and pressure.

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