Across
1
Absolute temperature scale unit
2
Natural satellite of Earth
4
Solid with repeating atomic pattern
6
Form of thermal energy
7
Element found in all living things
10
Particle of light
Down
2
Tissue that contracts for movement
3
Blocking of light by a celestial body
5
Gas form of a liquid
8
Reddish electrical conductor
9
Nerve cell in the brain
11
Ball of burning gas in space