Across
1
Center of an atom or cell
6
Natural satellite of Earth
7
Force that attracts objects together
8
Magnetic metallic element
9
Amplified beam of light
10
Push or pull on an object
Down
2
Glass that splits light into spectrum
3
Disturbance that transfers energy
4
Biological catalyst
5
Curved glass that refracts light
11
Absolute temperature scale unit
12
Solid with repeating atomic pattern
13
Gas form of a liquid