renewable vs. nonrenewable
Energy sources that can be replaced quickly.
Renewable
The most used energy sources worldwide.
Fossil fuels
The fossil fuel that releases the most CO₂.
Coal
Fuel used in nuclear reactors.
Uranium
Energy from the sun using panels.
Solar
Energy sources that cannot be replaced quickly.
Nonrenewable
Developing countries use a lot of this for energy.
Biomass
Liquid fossil fuel used for gasoline and diesel.
Petroleum (oil)
Process that splits atoms to release energy.
Fission
Largest renewable electricity source in the U.S.
Hydroelectric
Main fuel used for cooking in many poor countries.
Biomass (wood)
As countries get richer, their energy use does this.
Increases
Extraction method that uses high pressure fluid.
Fracking
Big problem with nuclear waste.
It stays radioactive for a long time
Energy from moving air.
Wind
Coal, oil, and natural gas are examples of this.
Fossil fuels
The U.S. and other rich countries use mostly this type of energy.
Commercial energy (fossil fuels + electricity)
Burning coal and oil mainly causes this problem.
Air pollution
Main advantage of nuclear power.
No emissions
Energy from heat inside the Earth.
Geothermal
Nuclear power is this type of resource.
Nonrenewable
Most of the world’s oil reserves are here.
Middle East
Main way fossil fuels make electricity.
Burn fuel → make steam → turn turbine → generate electricity
The famous nuclear accident in Ukraine.
Chernobyl
Energy made from organic waste or plants.