Across
1
Unit of electric potential
3
Particle of light
4
Hottest planet in solar system
6
Compound containing oxygen
8
Tissue that contracts for movement
11
Fourth state of matter
Down
2
Preserved remains of ancient life
3
Positive particle in nucleus
5
Icy body with a tail near the sun
7
Our home planet
9
Substance with pH above 7
10
Unit of power
11
Glass that splits light into spectrum