Across
1
Magnetic metallic element
3
Amplified beam of light
7
Ball of burning gas in space
8
Glass that splits light into spectrum
9
Molten rock beneath Earth surface
11
Push or pull on an object
12
Curved glass that refracts light
Down
2
Infectious microscopic agent
4
Unit of electric potential
5
Solid with repeating atomic pattern
6
Tissue that contracts for movement
10
Center of an atom or cell
13
Unit of heredity