Across
1
The Red Planet
3
Tectonic landmass section
4
Center of an atom or cell
6
Measure of matter in an object
9
Push or pull on an object
Down
2
Group of similar cells
3
Glass that splits light into spectrum
5
Precious yellow metallic element
7
Substance with pH above 7
8
Second lightest element
10
Force that attracts objects together