Across
1
Form of thermal energy
4
Substance with pH below 7
5
Naturally occurring inorganic solid
6
Center of an atom or cell
11
Glass that splits light into spectrum
Down
2
Curved glass that refracts light
3
Icy body with a tail near the sun
7
Unit of force
8
Amplified beam of light
9
Solid with repeating atomic pattern
10
Basic unit of life