Across
1
Natural satellite of Earth
2
Tectonic landmass section
4
Measure of matter in an object
7
Gas form of a liquid
8
Center of an atom or cell
9
Infectious microscopic agent
Down
2
Glass that splits light into spectrum
3
Magnetic metallic element
5
Second lightest element
6
Force that attracts objects together
10
Curved glass that refracts light