Across
1
Solid with repeating atomic pattern
3
Particle of light
5
Curved glass that refracts light
7
Blocking of light by a celestial body
8
Chemical element in table salt
9
Unit of electric potential
10
Glass that splits light into spectrum
Down
1
Basic unit of life
2
Gas form of a liquid
3
Tectonic landmass section
4
Amplified beam of light
6
Icy body with a tail near the sun