Across
1
Tectonic landmass section
4
Unit of power
5
Curved glass that refracts light
7
Preserved remains of ancient life
9
Reddish electrical conductor
Down
1
Glass that splits light into spectrum
2
Molten rock beneath Earth surface
3
Unit of force
6
Naturally occurring inorganic solid
8
Force that attracts objects together
10
Compound containing oxygen