Across
1
Glass that splits light into spectrum
2
Form of thermal energy
4
Gas essential for breathing
6
Unit of energy
8
Naturally occurring inorganic solid
9
Blocking of light by a celestial body
10
Compound containing oxygen
Down
1
Tectonic landmass section
3
Reddish electrical conductor
5
Force that attracts objects together
7
Ball of burning gas in space
8
Molten rock beneath Earth surface