The geyser old faithful in yellowstone national park is powered by what kind of energy?

Geothermal energy

Explanation:

The Yellowstone National Park is a wonderful park located in the United State, covering an area of about 3,500 square miles. This park is comprised of beautiful geological as well as hydrothermal wonders.

The old geyser found in this park is powered by the geothermal energy. This energy can be simply defined as the energy that is stored in the interior of the earth. This energy increases with the increasing depth and is basically used in the production of electricity.