Fossil and renewable energy resources
Fossils
-Fossils are buried dead organisms (plants, bones, stone…)
-They contain a very high concentration of carbon
-Fossils include petroleum, coal and natural gas
-Over 80% of the world’s energy production comes from the BURNING of these resources
-There a few big problems:
-the burning of these fossils produces a high amount of CO2 and contributes to air pollution and the greenhouse effect
-the earth’s fossil (non-renewable) energy resources are limited
-as the demand for these resources is too high, their price is increasing significantly
Renewable energy resources
-Renewable energy comes from natural resources
-These are sunlight, wind, rain, tides, waves and also geothermal energy
-They are unlimited, it is very unlikely that we run out of these resources
-They pose no environmental threat to the earth
-However, producing energy from renewable resources is highly problematic
-The first and biggest issue is the price – it is very expensive to produce energy
-This is because these resources require the most up-to-date devices
-The process and the technology is also very pricy
-These technologies are dependent on the circumstances
-For example if you live in a place with little sunlight, solar panels won’t work (Scandinavia)
-If there is no frequent wind in an area, there is no point in installing windmill farms
Alternative fuels
-The very first cars were operated by steam energy
-it was environmentally-friendly because steam doesn’t pollute the air
-however it needed too much coal and water boiled too fast so these cars had to be refilled far too often
-later water was replaced by petrol/gas
-in this case cars are operated by the burning of gas, because gas burns much slower and there is no need to refill very frequently
-however, petrol is extremely expensive
-the burning of petrol produces carbon-dioxide and causes high air pollution
-naturally, experts and scientists are trying to develop alternative fuels
-the most common alternative fuel is electricity
-more and more car companies are coming up with electric cars
-these cars are run by electric batteries but they drain too fast
-car manufacturing companies have created hybrid cars to overcome this problem (these cars are run by petrol-based and electric engines as well)