The word geothermal comes from the Greek words geo (earth) and therme (heat). Geothermal energy is a renewable energy source because heat is continuously produced inside the earth. People use geothermal heat for bathing, to heat buildings, and to generate electricity.
What makes geothermal energy a good alternative source of energy?
Why is geothermal energy a renewable resource? Answer: Because its source is the almost unlimited amount of heat generated by the Earth’s core. Even in geothermal areas dependent on a reservoir of hot water, the volume taken out can be reinjected, making it a sustainable energy source.
What is the source of geothermal source of energy?
Geothermal energy is produced by the heat of Earth’s molten interior. This energy is harnessed to generate electricity when water is injected deep underground and returns as steam (or hot water, which is later converted to steam) to drive a turbine on an electric power generator.
How does geothermal alternative energy work?
Geothermal power plants use steam to produce electricity. The steam comes from reservoirs of hot water found a few miles or more below the earth’s surface. The steam rotates a turbine that activates a generator, which produces electricity.
Why is geothermal energy considered renewable energy?
Geothermal power is considered to be a sustainable, renewable source of energy because the heat extraction is small compared with the Earth’s heat content. The GHG emissions of geothermal electric stations are less than 5% of that of conventional coal-fired plants.
Is geothermal energy a good source of energy?
Geothermal provides a reliable source of energy as compared to other renewable resources such as wind and solar power. This is because the resource is always available to be tapped into, unlike with wind or solar energy.
Is geothermal energy viable?
Geothermal energy is renewable; it is not a fossil fuel that will be eventually used up. The Earth is continuously radiating heat out from its core, and will continue to do so for billions of years. Some form of geothermal energy can be accessed and harvested anywhere in the world.
What is the ultimate source of geothermal energy?
The ultimate source of geothermal energy is radioactive decay of elements in the Earth. So, geothermal is a form of renewable nuclear energy without the problems of waste disposal.
What is geothermal energy example?
A Geyser is an example of Geothermal energy. Hot springs, lava, and fumaroles are natural examples of geothermal energy. Geothermal power is currently more common in homes and businesses, using geothermal heat pumps to control the temperature in the building.
What are the 3 main uses of geothermal energy?
Geothermal energy is used in three main ways: direct use, power generation, and ground source heating and cooling: Direct Use: The hot water in geothermal reservoirs produces heat and steam, which can be directly used for multiple purposes. In the past, hot springs were directly used for bathing and cleaning purposes.
How are geothermal and hydroelectric energy similar answers?
Geothermal and hydroelectric are renewable sources of energies and produce “clean” fuel sources. Geothermal energy is heat stored deep inside the earth or occasionally in hot springs. … Hydroelectricity is a form of energy generated by the motion of water (kinetic energy) and is converted into electricity.
Is geothermal energy safer than most other energy sources?
Because the energy is generated right near the plant, it saves on processing and transportation costs compared to other types of fuel. Geothermal plants are also considered to be more reliable than coal or nuclear plants because they can run consistently, 24 hours a day, 365 days a year.
Can geothermal energy replace fossil fuels?
“As state and national policies move to significantly reduce climate changing power emissions, geothermal is a baseload clean energy that can replace baseload fossil fuels at a minimum cost to the power system,” says Karl Gawell, GEA’s executive director.