Geothermal Energy

By. Ashton, Johnny, and Cameron

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Geothermal power

Pro
  1. Almost entirely emission free
  2. zero carbon
  3. could be built underground
  4. No fuel required
  5. Can provide load energy or peak power
Con's
  1. Water usage
  2. Sulfur dioxide and silica emissions
  3. Drilling into heated rock is vary difficult
  4. Minimum temperature of 350F+ generally required
Care must be taken to manage heat and not overuse it

Geothermal energy Information

Geothermal energy is thermal energy generated and stored in the Earth. Thermal energy is the energy that determines the temerature of matter. The Geothermal energy of the Earth's crust originates from the original formation of the planet (20%) and from radioactive decay of minerals (80%). The geothermal granite, 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.


At the core of the Earth, thermal energy is created by radioactive decay and temperatures may reach over 5000 °C (9,000 °F) heat conducts from the core to surrounding cooler rock. The high temperature and pressure cause some rock to melt, creating magma convection upward since it is lighter than the solid rock. The magma heats rock and water in the crust, sometimes up to 370 °C (700 °F).