Energy

3. a renewable energy source derived from the Earth's internal heat, used to generate electricity or for direct heating and cooling
5. coal, oil, and natural gas
7. a machine that converts the energy of a moving fluid or gas into a useful form of energy, typically rotational motion used to generate electricity
10. a barrier that stops or restricts the flow of water to create a reservoir
11. a form of energy released from the nucleus, the core of atoms, made up of protons and neutrons
12. a renewable power source that uses wind turbines to convert wind's kinetic energy into electricity

1. energy and electricity generated from the power of moving water
2. a renewable energy source derived from organic materials like plants, wood, agricultural waste, and animal waste
4. an opening in a planet's crust through which molten rock (magma), gases, and ash erupt, often forming a mountain or hill
6. the star at the center of our solar system, a massive, hot ball of plasma that provides Earth with the light and heat essential for life
8. energy from the sun that is captured and converted into useful forms like electricity or heat
9. a renewable energy source that harnesses the kinetic energy of ocean waves to generate electricity