energy

Biofuel Mass

A biofuel is a fuel that is produced through contemporary biological processes, such as agriculture and anaerobic digestion, rather than a fuel produced by geological processes such as those involved in the formation of fossil fuels, such as coal and petroleum, from prehistoric biological matter

Nonrenewable Resource

A nonrenewable resource is a resource of economic value that cannot be readily replaced by natural means on a level equal to its consumption. Most fossil fuels, such as oil, natural gas and coal are considered nonrenewable resources in that their use is not sustainable because their formation takes billions of years.

Conservation

Conservation is an ethic of resource use, allocation, and protection. Its primary focus is upon maintaining the health of the natural world, its fisheries, habitats, and biological diversity.

Fossil Fuels

Fossil fuel is a general term for buried combustible geologic deposits of organic materials, formed from decayed plants and animals that have been converted to crude oil, coal, natural gas, or heavy oils by exposure to heat and pressure in the earth's crust over hundreds of millions of years.

Primary Energy Source

Fossil fuels (coal, oil and gas), biofuels, wind, waves, solar radiation and nuclear fuels are all primary sources of energy. A secondary energy source is one that is made using a primary resource. Electricity is secondary resource, and can be generated by a number of different primary sources.

Geothermal Energy

Geothermal energy is heat energy generated and stored in the Earth. Thermal energy is the energy that determines the temperature of matter.

Hydroelectric Energy

Hydroelectricity is electricity produced from hydropower. In 2015 hydropower generated 16.6% of the world's total electricity and 70% of all renewable electricity, and was expected to increase about 3.1% each year for the next 25 years.

Nuclear Energy

Nuclear power plants split uranium atoms inside a reactor in a process called fission. At a nuclear energy facility, the heat from fission is used to produce steam, which spins a turbine to generate electricity.

Photovoltaic cells

Photovoltaics are best known as a method for generating electric power by using solar cells to convert energy from the sun into a flow of electrons by the photovoltaic effect. Solar cells produce direct current electricity from sunlight which can be used to power equipment or to recharge a battery.

Secondary Energy Src.

Secondary energy sources are called energy carriers, because they move energy in a useable form from one place to another

Solar Energy

Solar power is the conversion of energy from sunlight into electricity, either directly using photovoltaics, indirectly using concentrated solar power, or a combination.

Wind Energy

Wind power is the use of air flow through wind turbines to mechanically power generators for electric power.

Renewable Resource

renewable resource definition. Any resource, such as wood or solar energy, that can or will be replenished naturally in the course of time.

Energy

the strength and vitality required for sustained physical or mental activity.