Across
1
Reddish electrical conductor
4
Tectonic landmass section
7
Fourth state of matter
9
Blocking of light by a celestial body
11
Measure of matter in an object
12
Smallest unit of an element
Down
2
Amplified beam of light
3
Magnetic metallic element
5
Hottest planet in solar system
6
Molten rock beneath Earth surface
8
Disturbance that transfers energy
10
Mass per unit volume