Across
1
Naturally occurring inorganic solid
5
Molten rock beneath Earth surface
7
The Red Planet
8
Infectious microscopic agent
9
Push or pull on an object
11
Disturbance that transfers energy
13
Natural satellite of Earth
Down
2
Second lightest element
3
Center of an atom or cell
4
Glass that splits light into spectrum
6
Element found in all living things
10
Solid with repeating atomic pattern
12
Substance with pH below 7