Across
1
Reddish electrical conductor
3
Natural satellite of Earth
4
Disturbance that transfers energy
6
Blocking of light by a celestial body
8
Preserved remains of ancient life
11
Tectonic landmass section
Down
2
Magnetic metallic element
3
Naturally occurring inorganic solid
5
Unit of heredity
7
Unit of electric potential
9
The Red Planet
10
Fourth state of matter
12
Infectious microscopic agent