Across
1
Natural satellite of Earth
3
Disturbance that transfers energy
5
Push or pull on an object
6
Group of similar cells
7
Reddish electrical conductor
9
The Red Planet
10
Fourth state of matter
Down
1
Molten rock beneath Earth surface
2
Unit of electric potential
4
Biological catalyst
7
Icy body with a tail near the sun
8
Substance with pH above 7