1.
Heat energy that comes from the earth _________.
2.
_______ Energy comes back naturally. (sun, wind, water)
3.
______ Energy does not come back. (oil, coal, gas)
4.
_____ energy comes from the sun.
5.
Hydropower energy comes from moving ____.
6.
This energy comes from natural waste. (wood, dead trees, unused crops)
7.
Found deep underground and pumped to the surface. ___
8.
Energy that uses uranium. Makes electricity ___
