Across
1
Force that attracts objects together
5
Tectonic landmass section
6
Solid with repeating atomic pattern
7
Nerve cell in the brain
9
Substance with pH above 7
10
Our home planet
Down
1
Unit of heredity
2
Hottest planet in solar system
3
Ball of burning gas in space
4
Form of thermal energy
8
Smallest unit of an element