Across
1
Amplified beam of light
4
Glass that splits light into spectrum
5
Nerve cell in the brain
7
Substance with pH above 7
10
Solid with repeating atomic pattern
11
Unit of energy
Down
2
Push or pull on an object
3
Blocking of light by a celestial body
6
Center of an atom or cell
8
Element found in all living things
9
Natural satellite of Earth