Across
1
Unit of energy
2
Force that attracts objects together
3
Basic unit of life
4
Glass that splits light into spectrum
5
Naturally occurring inorganic solid
10
Biological catalyst
11
Reddish electrical conductor
12
Curved glass that refracts light
Down
2
Unit of heredity
3
Solid with repeating atomic pattern
4
Fourth state of matter
6
Natural satellite of Earth
7
Form of thermal energy
8
Tissue that contracts for movement
9
Unit of force