Across
1
Gas essential for breathing
3
Amplified beam of light
4
Biological catalyst
7
Solid with repeating atomic pattern
8
Unit of power
10
Tectonic landmass section
Down
2
Molten rock beneath Earth surface
3
Curved glass that refracts light
5
Positive particle in nucleus
6
Magnetic metallic element
9
Disturbance that transfers energy