Across
1
Naturally occurring inorganic solid
3
Nerve cell in the brain
5
Push or pull on an object
7
Unit of force
8
Unit of electric potential
9
Amplified beam of light
Down
1
The Red Planet
2
Reddish electrical conductor
4
Positive particle in nucleus
6
Force that attracts objects together
8
Infectious microscopic agent
10
Smallest unit of an element
11
Hottest planet in solar system