Across
|
2.
|
Produces most heat in the
universe
|
5.
|
power run by water
|
7.
|
wind, hydroelectric,coal,
and solar are different types of this
|
8.
|
main fossil fuel that
pollutes our planet
|
9.
|
The third planet from the sun
|
|
Down
|
1.
|
Produces wind energy
|
2.
|
Another type of clean energy
from the sun
|
3.
|
combines hydrogen and oxygon
to make energy
|
4.
|
Can be used more than once
|
6.
|
a hydroelectric power plant
|
|