The energy possessed by very hot rocks inside the earth is called the____ energy and is used to generate electricity.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the type of energy that is possessed by very hot rocks inside the Earth and is used to generate electricity.

2. **Identifying the Energy Source**: The energy that comes from the heat of the Earth's interior is known as geothermal energy. This energy is derived from the heat stored in the Earth's crust and is associated with hot rocks.

3. **Application of Geothermal Energy**: Geothermal energy is utilized to generate electricity. This is done by using the heat from the hot rocks to produce steam, which then drives turbines connected to generators.

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