Nonrenewable Energy

5. _________ mining is used when the coal is located deep below the Earth’s surface.
7. __________ gas is another fossil fuel found underground and is mostly made up of methane.
8. Fracking can cause __________, and chemicals can leak into water sources.
9. Fracking is a process where high-pressure _______ splits apart the rocks underground, releasing the trapped gas.
12. There is a limited amount of these resources and they take a long time to regenerate.
13. __________ energy is another type of nonrenewable energy, but it is not a fossil fuel. Technically, it’s renewable, but the materials needed in power plants are nonrenewable.
14. Nuclear _______ is a process where the inner core of an atom is split and energy is released.

1. _______ is one of the most dangerous jobs in the world.
2. _________ mining is used when the coal is located near the Earth’s surface.
3. Nuclear energy produces ________ waste that can be extremely harmful to humans.
4. Nonrenewable energy sources are usually much more ____ to the environment that renewable energy sources.
6. Most nonrenewable energy sources are _______ _______.
10. _______ is the main material in fossil fuels.
11. ________, or oil, is a liquid fossil fuel found in underground rock formations.