Across
1
Compound containing oxygen
3
Form of thermal energy
5
Tectonic landmass section
6
Infectious microscopic agent
7
Ball of burning gas in space
9
Substance with pH above 7
10
Positive particle in nucleus
11
Unit of force
Down
2
Amplified beam of light
4
Preserved remains of ancient life
5
Glass that splits light into spectrum
8
Blocking of light by a celestial body