Across
1
Tectonic landmass section
5
Molten rock beneath Earth surface
6
Icy body with a tail near the sun
9
Positive particle in nucleus
10
Reddish electrical conductor
12
Tissue that contracts for movement
13
Absolute temperature scale unit
14
Magnetic metallic element
Down
2
Gas form of a liquid
3
Amplified beam of light
4
Gas essential for breathing
7
Chemical element in table salt
8
Compound containing oxygen
11
Biological catalyst