Across
1
Preserved remains of ancient life
4
Element found in all living things
6
Molten rock beneath Earth surface
7
Ball of burning gas in space
8
Solid with repeating atomic pattern
Down
2
Force that attracts objects together
3
Gas form of a liquid
5
Curved glass that refracts light
9
Disturbance that transfers energy
10
Substance with pH above 7