Across
1
Tectonic landmass section
4
Compound containing oxygen
5
Reddish electrical conductor
6
The Red Planet
9
Gas essential for breathing
10
Measure of matter in an object
Down
1
Glass that splits light into spectrum
2
Naturally occurring inorganic solid
3
Form of thermal energy
5
Icy body with a tail near the sun
7
Unit of heredity
8
Unit of power
11
Substance with pH below 7
12
Ball of burning gas in space