Across
1
Disturbance that transfers energy
4
Glass that splits light into spectrum
6
Naturally occurring inorganic solid
7
Unit of power
8
Particle of light
9
Icy body with a tail near the sun
11
Substance with pH below 7
Down
2
Smallest unit of an element
3
Unit of force
4
Tectonic landmass section
5
Reddish electrical conductor
6
Molten rock beneath Earth surface
10
Gas form of a liquid