What is geothermal energy generated from?

Geothermal energy is generated from heat stored deep within the Earth. This heat originates from the natural radioactive decay of minerals, residual heat from the planet’s formation, and geothermal gradients where temperature increases with depth. In areas where geological conditions are favorable, this heat can be accessed to produce steam, which drives turbines to generate electricity or be used directly for heating. The process takes advantage of the Earth's internal heat, making it a renewable and sustainable source of energy, especially beneficial in regions with volcanic activity or hot springs.

The other options relate to different forms of renewable energy but do not accurately describe geothermal energy. Wind energy harnesses atmospheric pressure and air movement, solar energy collects the sun's rays, and biomass energy derives from organic materials. Each of these is distinct from the heat sourced directly from the Earth's interior, highlighting the uniqueness of geothermal energy in the broader context of energy generation.