Question

write a short note on geothermal energy? in 100 words
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Answer 1

Explanation:

Geothermal energy is thermal energy generated and stored in the Earth. Thermal energy is the energy that determines the temperature of matter. The geothermal energy of the Earth's crust originates from the original formation of the planet and from radioactive decay of materials (in currently uncertain[1] but possibly roughly equal[2] proportions). The geothermal gradient, which is the difference in temperature between the core of the planet and its surface, drives a continuous conduction of thermal energy in the form of heat from the core to the surface. The adjective geothermal originates from the Greek roots γη (ge), meaning earth, and θερμος (thermos), meaning hot.

Answer 2

Geothermal energy, form of energy conversion in which heat energy from within Earth is captured and harnessed for cooking, bathing, space heating, electrical power generation, and other uses.

Geothermal energy, form of energy conversion in which heat energy from within Earth is captured and harnessed for cooking, bathing, space heating, electrical power generation, and other uses.Mount St. Helens volcano, viewed from the south during its eruption on May 18, 1980.

Geothermal energy, form of energy conversion in which heat energy from within Earth is captured and harnessed for cooking, bathing, space heating, electrical power generation, and other uses.Mount St. Helens volcano, viewed from the south during its eruption on May 18, 1980.volcano: Volcanoes and geothermal energy

Geothermal energy, form of energy conversion in which heat energy from within Earth is captured and harnessed for cooking, bathing, space heating, electrical power generation, and other uses.Mount St. Helens volcano, viewed from the south during its eruption on May 18, 1980.volcano: Volcanoes and geothermal energyGeothermal energy is plentiful, but geothermal power is not. Temperatures increase below…

Geothermal energy, form of energy conversion in which heat energy from within Earth is captured and harnessed for cooking, bathing, space heating, electrical power generation, and other uses.Mount St. Helens volcano, viewed from the south during its eruption on May 18, 1980.volcano: Volcanoes and geothermal energyGeothermal energy is plentiful, but geothermal power is not. Temperatures increase below…Heat from Earth’s interior generates surface phenomena such as lava flows, geysers, fumaroles, hot springs, and mud pots. The heat is produced mainly by the radioactive decay of potassium, thorium, and uranium in Earth’s crust and mantle and also by friction generated along the margins of continental plates. The subsequent annual low-grade heat flow to the surface averages between 50 and 70 milliwatts (mW) per square metre worldwide. In contrast, incoming solar radiation striking Earth’s surface provides 342 watts per square metre annually (see solar energy). Geothermal heat energy can be recovered and exploited for human use, and it is available anywhere on Earth’s surface. The estimated energy that can be recovered and utilized on the surface is 4.5 × 106 exajoules, or about 1.4 × 106 terawatt-years, which equates to roughly three times the world’s annual consumption of all types of energy.