Across
1
Force that attracts objects together
4
Naturally occurring inorganic solid
5
Curved glass that refracts light
7
The Red Planet
Down
1
Precious yellow metallic element
2
Smallest unit of an element
3
Tectonic landmass section
6
Amplified beam of light
8
Second lightest element
9
Form of thermal energy
10
Chemical element in table salt