nuclear energy
thermal energy
co-generation
hydro energy
ocean energy
solar energy
natural gas
tidal power
wind energy
geothermal
biomass
coal
oil
nonrenewable resources
hydroelectric energy
photovolactic cell
hydroelectric dam
radioactive decay
geothermal energy
geothermal plant
energy resources
solar collector
photosynthesis
nuclear energy
solar energy
wind energy
fossil fuel
windmills
wind farm
biofuels
biomass
fission
fusion
nonrenewable resource
renewable resource
electromagnetic
hydroelectric
gravitational
fossil fuels
natural gas
geothermal
electrical
mechanical
vibration
potential
chemical
uranium
biomass
fission
nuclear
thermal
elastic
kinetic
fusion
energy
waves
solar
sound
joule
coal
wind
oil
sun
nuclear energy
hydroelectric
fossil fuels
solar energy
geothermal
wind power
biomass
natural
hydro
coal
oil
Any material made naturally that is used by humans or living things.
A natural resource that can be used and replaced over a relatively short time.
A natural resource that cannot be replaced or that can be replaced only over thousands or millions of years.
Energy as solar, wind, or nuclear energy that can replace traditional fossil fuel sources, such as coal, oil, and natural gas.
Renewable energy derived from burning organic materials such as wood and alcohol.
Conservation method in which old materials are processed to make new ones.
Nonrenewable energy resource, such as oil and coal, formed over millions of years from the remains of dead plants and other organisms.
Inexhaustible energy resource that used hot magma or hot, dry rocks from below Earth's surface to generate electricity.
Electricity produced by water-power using large dams in a river.
Alternative energy source that is based on atomic fission.
Energy from the Sun that is clean, inexhaustible, and can be transformed into electricity by solar cells.
Careful use of resources to reduce damage to the environment though such methods as composting and recycling materials.
A resource that remains in constant supply and will not run out.
Fossil fuel formed from marine organisms that is often found in tilted or folded rock layers and is used for cooking and heating.
energy conservation
greenhouse gasses
nuclear energy
inexhaustible
hydroelectric
nonrenewable
fossil fuels
biomass fuel
solar energy
environment
electricity
wind energy
natural gas
geothermal
pollution
renewable
recycling
wind farm
cong
coal
oil
naturalresources
nonrenewable
environment
fossilfuels
electricity
solarpower
hydropower
naturalgas
organisms
sediments
renewable
transform
pollution
windpower
generator
transfer
animals
turbine
plants
energy
water
wind
coal
sun
oil
RENEWABLE
NON-RENEWABLE
SOLAR ENERGY
HYDROPOWER
GEOTHERMAL
NUCLEAR
BIOMASS
COAL
FOSSIL FUEL
NATURAL GAS
OIL
PETROLEUM
MINERALS
NATURAL RESOURCES
CONSERVATION