Across
1
Gas form of a liquid
4
Force that attracts objects together
6
Blocking of light by a celestial body
8
Tissue that contracts for movement
Down
2
Nerve cell in the brain
3
Solid with repeating atomic pattern
5
Disturbance that transfers energy
7
Path of a planet around the sun
9
The Red Planet
10
Infectious microscopic agent
11
Chemical element in table salt