Across
1
Ball of burning gas in space
4
Tectonic landmass section
5
Biological catalyst
7
Gas essential for breathing
9
Naturally occurring inorganic solid
11
Magnetic metallic element
Down
2
Curved glass that refracts light
3
Glass that splits light into spectrum
6
Molten rock beneath Earth surface
8
Blocking of light by a celestial body
10
Form of thermal energy
12
Solid with repeating atomic pattern
13
Icy body with a tail near the sun