Across
1
Substance with pH below 7
2
Tectonic landmass section
4
Reddish electrical conductor
6
Form of thermal energy
8
Molten rock beneath Earth surface
Down
2
Glass that splits light into spectrum
3
Ball of burning gas in space
5
Fourth state of matter
7
Push or pull on an object
9
Basic unit of life
10
Solid with repeating atomic pattern