Across
1
Tectonic landmass section
4
Amplified beam of light
5
Force that attracts objects together
7
Naturally occurring inorganic solid
8
Center of an atom or cell
10
Form of thermal energy
11
Compound containing oxygen
Down
1
Particle of light
2
Push or pull on an object
3
Group of similar cells
6
Substance with pH above 7
7
Molten rock beneath Earth surface
9
Our home planet