Across
1
Precious yellow metallic element
3
Molten rock beneath Earth surface
4
Absolute temperature scale unit
6
Blocking of light by a celestial body
8
Positive particle in nucleus
9
Measure of matter in an object
Down
2
Chemical element in table salt
5
Curved glass that refracts light
6
Our home planet
7
Smallest unit of an element
9
Tissue that contracts for movement
10
Natural satellite of Earth
11
Naturally occurring inorganic solid
12
Unit of force