Across
1
Compound containing oxygen
4
Our home planet
7
Second lightest element
8
Magnetic metallic element
9
Infectious microscopic agent
11
Hottest planet in solar system
Down
2
Naturally occurring inorganic solid
3
Blocking of light by a celestial body
5
Force that attracts objects together
6
Chemical element in table salt
10
Disturbance that transfers energy
12
Tissue that contracts for movement