Across
1
Naturally occurring inorganic solid
5
Curved glass that refracts light
7
Natural satellite of Earth
9
Preserved remains of ancient life
10
Biological catalyst
11
Amplified beam of light
12
Glass that splits light into spectrum
Down
2
Push or pull on an object
3
Substance with pH above 7
4
Icy body with a tail near the sun
6
Center of an atom or cell
8
Nerve cell in the brain