Russ's Renewable Energy Riddles!

3. This renewable energy source is often falsely connected to earthquakes.
4. This gas is one of the largest negatives associated with burning fossil fuels.
7. Due to the fact that solar and wind energy isn't constant, it is very important that we improve this to be able to store excess energy for when we need it.
8. The original source of almost all energy on Earth.
10. While not often connected directly to renewable energy, this part of the three R's helps to conserve our planet's resources.
11. Wood, algae, crops, and even garbage can are considered to be part of this renewable energy.
13. It's not just fossil fuels we have to worry about extinguishing! Scientists estimate we have roughly 60 years before this agriculture necessity is eroded.
16. This renewable energy actually depends on the Moon's gravitational pull!
18. Wind energy relies on both horizontal and vertical rotation of this!
19. This renewable energy source is actually capable of slowing down the very thing that powers it!

1. This form of energy is defined as one that is naturally replenishing.
2. Shockingly, almost all renewable energy is designed to create this! (See what I did there!)
5. While this energy source doesn't produce any air pollution or carbon dioxide, it does create waste which can remain deadly for hundred of thousands of years.
6. This is the energy source human beings have relied on the longest! (Remember Hans and Franz!)
9. Using this as a fuel results in water and heat being produced, no pollution whatsoever!
11. The Belgium Blue is a fantastic example of this!
12. This is considered the most abundant energy source on earth, providing 10,000 times more energy than we need!
14. It is estimated we have a roughly 50 year supply of this fossil fuel.
15. Many renewable energies use this form of energy to create power!(It's got potential but it's not potential energy)
17. This renewable energy's blades are often connected to the death of these animals.