Renewable Energy

2. The type of energy that uses the power of the sun.
6. The type of energy that can't realistically be depleted.
8. The gas produced by the burning of plant matter.
9. "Geothermal heat is heat trapped inside the Earth from the forming of the crust 4.5 billion years ago and from ________ decay."
10. The main power source that people are trying to replace with renewable energy.
11. Geothermal systems are most vulnerable to __________
12. The type of energy that uses the mostly horizontal natural phenomenon that is due to unbalanced temperatures

1. The grade of Wind turbine that can power many different energy organizations.
3. The type of energy that is produced mostly by Dams.
4. The energy that comes from organic matter.
5. The type of energy that uses the heat trapped beneath the Earth's crust 4.5 billion years ago.
7. The type of system that uses solar cells to convert direct sunlight into electricity