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Stack #4589426
| Question | Answer |
|---|---|
| Why we need alternative energy? | -Earth is on the brink of human extinction -climate change -most energy is not renewable -burning fossil fuels makes CO2 that causes global warming -Renewable energy does not cause global warming |
| Biofuel | -A type of renewable energy made from plant waste and biomass -renewable yearly -makes less greenhouse waste t-wo most common biofuels are ethanol and biodiesel |
| Biofuel production | -made with corn, sugarcane and algae -ethanol is made through fermentation -biodiesel is made from animal fat and vegetable oils -high temps or catalytic enzymes are used to break down cell structure |
| Solar Energy | - uses Sun rays to make electricity -solar panels with photovoltaic cells make Sun rays into energy -produces zero CO2 -only functions during the day |
| Wind Energy | -harness winds to make energy -uneven heating of the earth makes winds -windmills are pushed by winds through airfoil blades to make power |
| Geothermal | -uses heat produced from the earth -the core of the earth makes heat as hot as the sun -geothermal plants use steam or heat transfer to turn turbines and create electricity |
Created by:
Cate07