Across
1
Positive particle in nucleus
4
Path of a planet around the sun
6
Solid with repeating atomic pattern
8
Substance with pH above 7
9
Curved glass that refracts light
Down
1
Glass that splits light into spectrum
2
Gas essential for breathing
3
Magnetic metallic element
5
Amplified beam of light
7
Unit of power
10
Tectonic landmass section