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Geothermal Heat
Geothermal energy is thermal energy obtained from Earth's interior.
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Geothermal Heat
Recommended for Class 10
Geothermal Heat
Geothermal Energy
Geothermal energy is thermal energy obtained from Earth's interior.
Earth's internal heat comes partly from radioactive decay and partly from energy remaining from Earth's formation and internal differentiation.
Uses
Geothermal energy can provide:
direct heating; hot-water systems; * electricity generation.
Electricity Production
Earth's internal heat warms underground fluids.
Hot fluid or steam can transfer energy to a turbine.
The turbine drives a generator.
Advantages
can provide relatively steady energy; does not require fossil-fuel combustion during normal heat extraction; * useful for heating and electricity.
Limitations
strongly location-dependent; drilling can be expensive; underground fluids require management; geological and environmental effects must be considered.
Geothermal Heat — Advanced
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Practice
PQ
Q1. Define geothermal energy.
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Q2. Give two uses.
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Q3. Give one source of internal heat.
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Q4. Explain electricity sequence.
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Q5. Give one limitation.
Exam Practice
EQ
Q1. Define geothermal energy.
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Q2. Describe geothermal power generation.
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Q3. State two advantages.
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Q4. State two limitations.
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Q5. Explain why geothermal resources vary geographically.
School-standard facts for Matric and Intermediate. Original explanations — not copied from textbooks.