Fossil Fuels Flashcards
(6 cards)
1
Q
How are fossil fuels formed ?
A
Over millions of years
2
Q
What are fossil fuels ?
A
A finite resource
3
Q
How is coal formed?
A
The remains of ferns and trees which did not decompose due to a lack of oxygen or acidic conditions
Over time the plant remains are covered with sediment and compressed
High temperature and pressure then creates coal
4
Q
What is crude oil formed from ?
A
Remains of ancient biomass mainly plankton that where subjected to high pressures and temperatures over millions of years
5
Q
How is natural gas made ?
A
Manly hydrocarbon methane
Is formed from plankton in a similar way to oil
6
Q
What do all fossil fuels contain ?
A
Trapped carbon
