Question

What is geothermal energy ?Ilcav can itbe used commercially? List in tabular form three distinguishing features between a thermal power plant and a geothermal power plant

CBSE Class X Science SA 2 (3 Marks)

Answer 1

The underground water comes in contact with 'hot spots' present in the earth's crust and steam is generated. This energy possessed by the hot water below the earth is called Geothermal energy. It can be used to produce electricity.

Thermal Power Plant:

Uses coal as fuel.
Causes pollution.
The fuel used is very expensive.


Geothermal Power Plant:

Uses underground hot water.
Does not cause pollution. 
The fuel is free of cost.

Answer 2

Answer:

The energy obtained from earth is geothermal energy.