What are hot spots? How can you extract energy from a hot spot, if it does not come in contact with underground water?

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Solution

Hot spots: The places under the surface of earth, where hot magma collects at fairly less depths, are called hot spots of the earth.
If hot spot does not come in contact with underground water then two holes are made in the earth’s crust. Through one hole is pumped in cold water. The cold water on coming in contact with the hot spot changes to super heated steam, which emerges out from the other hole. The steam is then made to run a turbine coupled with generator to produce electricity.

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Anomalous Expansion of Water

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Chapter 7: Energy Flow and Practices for Conservation of Resources - Exercise

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Goyal Brothers Prakashan A New Approach to ICSE Physics Part 1 [English] Class 9

Chapter 7 Energy Flow and Practices for Conservation of Resources
Exercise | Q 32

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