Across
1
Blocking of light by a celestial body
5
Molten rock beneath Earth surface
8
Magnetic metallic element
9
Compound containing oxygen
10
Group of similar cells
11
Icy body with a tail near the sun
Down
2
Amplified beam of light
3
Absolute temperature scale unit
4
Form of thermal energy
6
Disturbance that transfers energy
7
Positive particle in nucleus