Question

How is geothermal energy obtained?

Answer 1

Hint: The term Geothermal comes from two words- Geo which means Earth and thermal implies heat. Geothermal energy is the energy that is derived from below the crust of the earth usually $$1800$$ miles below. Geothermal energy is available all over the planet.

Complete answer:
Geothermal energy is produced from below the earth in the geothermal plants. There is a rise in the temperature of Earth from the surface to the core.
This gradual shift in its temperature is called the geothermal gradient, which is around $${25}^{\circ }$$ C per 1 kilometer of depth in the majority of parts of the world.
The temperature of the earth is very high due to the continuous decay of radioactive isotopes. The temperature of the Earth's surface rises above ${5000}^{\circ }$C that creates a geothermal source of energy.
The sources of geothermal energy are lava, geysers, steam vents, or dry heat. Pipelines are used to supply water to the crust of the earth.
This heat always radiates and warms the water, rocks, gas, and different geological elements. The heated water is turned into steam and is transported above the crust to the plants. The heat can be seized and utilized for heating purposes, whereas the application of geothermal energy steam is to generate electricity.

Note: Plenty of hot springs and pools across the world emit geothermal energy. Geothermal energy is used to heat many buildings, sidewalks, and parking lots.
-Cold countries use geothermal energy for heating greenhouses and water for irrigation.
-It is a green source of energy because it does not release hazardous greenhouse gases. It is safe for human health and environment.