Across
1
Infectious microscopic agent
4
Gas form of a liquid
6
Disturbance that transfers energy
8
Compound containing oxygen
9
Magnetic metallic element
12
Nerve cell in the brain
Down
2
Force that attracts objects together
3
Solid with repeating atomic pattern
5
Particle of light
7
Absolute temperature scale unit
8
Path of a planet around the sun
10
Measure of matter in an object
11
Blocking of light by a celestial body