Across
1
Reddish electrical conductor
4
Unit of energy
5
Tissue that contracts for movement
8
Naturally occurring inorganic solid
9
Substance with pH below 7
10
Nerve cell in the brain
Down
1
Icy body with a tail near the sun
2
Curved glass that refracts light
3
Glass that splits light into spectrum
6
Gas essential for breathing
7
Absolute temperature scale unit
8
Natural satellite of Earth