Across
1
Unit of force
4
Group of similar cells
5
Unit of energy
7
Absolute temperature scale unit
10
Glass that splits light into spectrum
11
Molten rock beneath Earth surface
13
Smallest unit of an element
14
The Red Planet
Down
2
Amplified beam of light
3
Reddish electrical conductor
6
Nerve cell in the brain
8
Ball of burning gas in space
9
Substance with pH above 7
12
Solid with repeating atomic pattern