Across
1
Absolute temperature scale unit
3
Molten rock beneath Earth surface
5
Gas essential for breathing
6
Curved glass that refracts light
7
Reddish electrical conductor
9
Substance with pH above 7
Down
2
Glass that splits light into spectrum
4
Unit of force
6
Amplified beam of light
8
Magnetic metallic element
10
Infectious microscopic agent
11
Mass per unit volume