Across
1
Positive particle in nucleus
4
Measure of matter in an object
6
Solid with repeating atomic pattern
7
Push or pull on an object
9
Unit of power
11
Unit of electric potential
Down
2
Infectious microscopic agent
3
Force that attracts objects together
4
Tissue that contracts for movement
5
Unit of force
8
Particle of light
10
Tectonic landmass section