4. Earth's internal heat produces. \( \bar{A} \) Electricity \( \bar{B} \) Hydroelectric power \( \mathbf{C} \) Geothermal energy

Did you know that geothermal energy is harnessed by tapping into the Earth's heat? This energy comes from the natural decay of radioactive materials and residual heat from the planet's formation. Countries like Iceland and the Philippines have become pioneers in utilizing geothermal power, turning steam from hot springs into electricity and heating for their homes! In real-world applications, geothermal energy is not only renewable but also extremely efficient! It can provide a constant energy source unlike solar or wind, which is subject to the weather. Many power plants around the world utilize geothermal energy, providing a sustainable option with a much lower carbon footprint than fossil fuels. How cool is that?