Across
1
Our home planet
4
Magnetic metallic element
6
Naturally occurring inorganic solid
7
Chemical element in table salt
10
Blocking of light by a celestial body
11
Gas form of a liquid
Down
2
Compound containing oxygen
3
Form of thermal energy
5
Glass that splits light into spectrum
6
Natural satellite of Earth
8
Substance with pH above 7
9
Unit of power
12
Infectious microscopic agent
13
Push or pull on an object