Across
1
Amplified beam of light
3
Tissue that contracts for movement
4
Substance with pH above 7
6
Icy body with a tail near the sun
9
Solid with repeating atomic pattern
Down
2
Unit of electric potential
3
Naturally occurring inorganic solid
5
Fourth state of matter
7
Unit of energy
8
Substance with pH below 7
10
Molten rock beneath Earth surface