Across
1
Molten rock beneath Earth surface
3
Solid with repeating atomic pattern
4
Unit of heredity
6
Form of thermal energy
7
Chemical element in table salt
9
Glass that splits light into spectrum
11
Reddish electrical conductor
Down
2
Our home planet
3
Element found in all living things
5
Blocking of light by a celestial body
8
Gas form of a liquid
10
Positive particle in nucleus
12
Basic unit of life