Across
1
Naturally occurring inorganic solid
2
Icy body with a tail near the sun
6
Unit of electric potential
7
Ball of burning gas in space
9
Amplified beam of light
10
Tissue that contracts for movement
Down
2
Reddish electrical conductor
3
Biological catalyst
4
Absolute temperature scale unit
5
Our home planet
8
Basic unit of life
10
Measure of matter in an object
11
Fourth state of matter