Across
1
Center of an atom or cell
5
Solid with repeating atomic pattern
6
Tectonic landmass section
9
Glass that splits light into spectrum
10
Preserved remains of ancient life
Down
2
Positive particle in nucleus
3
Substance with pH below 7
4
Ball of burning gas in space
7
Unit of energy
8
Curved glass that refracts light
11
Path of a planet around the sun
12
Gas form of a liquid
13
Molten rock beneath Earth surface
14
Blocking of light by a celestial body