1. Nonrenewable Energy Resource
An energy resource that is used much faster than it can be replaced

2. Renewable Energy Resource
A source of energy that can be replaced through natural processes at a rate that is equal to or greater than the rate at which they are being used.

3. Fossil Fuel
A source of energy that formed from the remains of organisms that lived millions of years ago.
Nonrenewable energy
Examples: coal, petroleum, natural gas
They release carbon dioxide into the air when burned.

4. Solar Energy Energy from the sun Renewable energy
Can be expensive at first but pays for itself in the long run

5. Photovoltaic Cell
A device that can change light energy into electricity
Also called solar cell

6. Wind Energy The energy of moving air A renewable energy source
Wind Turbines are very noise and can kill migrating birds

7. Hydropower The energy of moving water A renewable energy resource
Building of dams destroys habitats for organisms; one side of dam is flooded while the other is drained

8. Biomass
Any material from living things that can be used as an energy source
A renewable resource
Fermented corn is used to make ethanol.
Burning wood

9. Nuclear Power
the use of nuclear reactions that release nuclear energy to generate heat, which most frequently is then used in steam turbines to produce electricity in a nuclear power plant
Heat can kill fish in local water
Radioactive waste is an issue

10. Geothermal Energy
Heat energy from within Earth that can be used to heat buildings and produce electricity
A renewable resource
Requires a location that is over volcanically active ground