Across
1
Unit of electric potential
3
Absolute temperature scale unit
6
Compound containing oxygen
8
Nerve cell in the brain
11
Ball of burning gas in space
Down
2
Natural satellite of Earth
4
Icy body with a tail near the sun
5
Curved glass that refracts light
7
Unit of heredity
9
Unit of force
10
Infectious microscopic agent
12
Tectonic landmass section
13
Unit of energy