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renewable sources of energy - Coggle Diagram
renewable sources of energy
liquids, gases, solids
oil
formed from the remains of animals and plants
layers formed by sand, heat and pressure
-> crude oil/petroleum
crude oil
smelly
black-yellowish
found in reservoirs
natural gas
main ingredient - mathane
formed from the remains of animals and plants (organic material)
layers formed by sand, heat and pressure
coal
combustible sedimentary rock
black/brownish-black
main ingredients - carbon and hydrocarbons
takes millions of years to create
formed from layers of remains of plants, water and dirt
heat and pressure