Across
1
Basic unit of life
3
Force that attracts objects together
4
Gas form of a liquid
6
Ball of burning gas in space
Down
1
Solid with repeating atomic pattern
2
Curved glass that refracts light
5
Measure of matter in an object
7
Disturbance that transfers energy
8
Molten rock beneath Earth surface
9
Second lightest element
10
Preserved remains of ancient life
11
Naturally occurring inorganic solid