(a) What is geothermal energy ?
(b) What is the source of heat contained in geothermal energy ?
(c) Explain how, geothermal energy is used to generate electricity.
(d) State two advantages of geothermal energy.
(e) State two disadvantages of geothermal energy.
(a) What is geothermal energy ?
(b) What is the source of heat contained in geothermal energy ?
(c) Explain how, geothermal energy is used to generate electricity.
(d) State two advantages of geothermal energy.
(e) State two disadvantages of geothermal energy.
a) Geothermal energy is the heat energy from hot rocks present inside the earth.
b) The source of geothermal energy is the earth’s internal heat where the temperatures at the core mantle boundary of the earth reaches over 4000 °C. This heat is
generated from radioactive decay and continual heat loss from Earth’s formation
(c) Extremely hot rocks present below the surface of earth heat the underground water and convert it into steam. As more and more steam is formed between the rocks, it gets compressed generating high pressure. This high pressure steam is brought up through pipes and is used to run the turbine of a generator to produce electricity.
(d) Advantage of geothermal energy:
(i) It is very economical to use.
(ii) It does not cause any pollution.
(e) Disadvantage of geo thermal energy:-
(i) It is not available everywhere.
(ii) Deep drilling in the earth is required, which is technically very difficult and expensive.
a) Geothermal energy is the heat energy from hot rocks present inside the earth.
b) The source of geothermal energy is the earth’s internal heat where the temperatures at the core mantle boundary of the earth reaches over 4000 °C. This heat is
generated from radioactive decay and continual heat loss from Earth’s formation
(c) Extremely hot rocks present below the surface of earth heat the underground water and convert it into steam. As more and more steam is formed between the rocks, it gets compressed generating high pressure. This high pressure steam is brought up through pipes and is used to run the turbine of a generator to produce electricity.
(d) Advantage of geothermal energy:
(i) It is very economical to use.
(ii) It does not cause any pollution.
(e) Disadvantage of geo thermal energy:-
(i) It is not available everywhere.
(ii) Deep drilling in the earth is required, which is technically very difficult and expensive.
