Across
1
Nerve cell in the brain
5
Group of similar cells
6
Gas form of a liquid
8
Center of an atom or cell
11
Unit of power
Down
2
Ball of burning gas in space
3
Hottest planet in solar system
4
Absolute temperature scale unit
7
Path of a planet around the sun
9
Solid with repeating atomic pattern
10
Tectonic landmass section