Fossil Fuels & Alternative Energy Flashcards
alternative energy
energy made from sources that do not use up natural resources or harm the environment
biofuel
a fuel that is made from renewable plant or animal material (i.e. wood)
coal
a nonrenewable form of energy created from plants that lived millions of years ago
fossil fuel
a fuel formed from the remains of once-living organisms (coal, oil, and natural gas)
geothermal energy
heat from inside the Earth
hydroelectric energy
electricity made from the force of moving water
natural gas
gas formed underground from decayed plants and animals that lived millions of years ago
natural resource
any of the useful minerals and other materials that people take from the Earth
nonrenewable energy
a resource that cannot be readily replaced once it is used
peat
a soft, brown material made up of partly decayed plants; first stage of coal formation
petroleum
a thick, oily, nonrenewable form of energy made from the remains of plants and animals that lived millions of years ago.
renewable energy
a resource that is replaced as it is used
reusable resource
a natural resource that is renewed by natural cycles and can be used more than once
solar energy
energy from sunlight
wind energy
energy from the wind