1) Reliance on Fossil Fuels Flashcards
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What is a fossil fuel?
fuel consisting of the remains of organisms preserved in earths crust with high carbon and hydrogen content
fossil fuels time frame
fossil fuels cannot be replenished in a human lifetime and can take hundreds of millions of years to fully replenish
Definition of renewable energy
a form of energy derived from natural sources that do not use up natural resources to harm the environment
renewables time frame
renewables is a source that will never run out or can be replenished in a human lifetime
types of fossil fuels
coal, crude oil, natural gas
types of renewables
wind, solar, biomass and tidal
the formation of coal
coal is formed from the dead remains of plants that fall and accumulate on the ground over time. The ever increasing weight compresses the remains into peat, this takes millions of years. Then the peat gets further compressed and the temperature increases forming different grades of coal
formation of crude oil
crude oil and natural gas are formed from the dead remains of sea organisms, they die and settle on top along with other rocks and sediments, increase in pressure increases the temperature which forms crude oil
formation of natural gas
In underground crude oil wells, natural gas forms at the top which humans drill down to on land and in the sea in order to extract
what is used in the production of plastics, pharmaceutics, transportation and fibres. use examples
crude oil, food packaging/ single use plastic grocery bags, aspirin/ penicillin, petrol/ diesel, nylon/ acrylic
what have countries done to combat the use of fossil fuels, what country has not?
the vast majority of nations have took action by signing the Paris Agreement 2015, except for the USA who pulled out in 2017 under Trump, which is of concern as they account for 20% of the whole worlds usage of crude oils. (7 more than 2nd, China 13%)
why is global action required againsed the use of fossil fuels
this is because every nation is using fossil fuels excessively.
Why do we need to conserve fossil fuels?
it takes millions of years to form fossil fuels, and our usage has rapidly increased since the Industrial Revolution, and we cannot keep up with our usage and our resources will very soon run out. Especially with countries population increases like India and China.
The estimated lifespan of coal, crude oil and natural gas
coal: 114 years
Crude oil: 50 years
natural gas: 53 years
location and accessibility of our reserves
in years to come we will most likely advance and be able to discover more fossil fuels although some of the fossil fuel reserves discovered already and more in the future may be physically unviable to use, like oil found deep in the north sea