Across
1
Reddish electrical conductor
5
Unit of energy
7
Smallest unit of an element
8
Group of similar cells
Down
2
Blocking of light by a celestial body
3
Form of thermal energy
4
Positive particle in nucleus
6
Element found in all living things
9
Molten rock beneath Earth surface
10
Tectonic landmass section
11
Hottest planet in solar system