Across
1
Molten rock beneath Earth surface
2
Blocking of light by a celestial body
3
Particle of light
5
Push or pull on an object
6
Hottest planet in solar system
9
Naturally occurring inorganic solid
12
Glass that splits light into spectrum
Down
2
Biological catalyst
4
Natural satellite of Earth
7
Element found in all living things
8
Solid with repeating atomic pattern
10
Tissue that contracts for movement
11
Gas essential for breathing