Across
1
Force that attracts objects together
5
Preserved remains of ancient life
6
Biological catalyst
10
Solid with repeating atomic pattern
Down
2
Measure of matter in an object
3
Unit of electric potential
4
Molten rock beneath Earth surface
7
Nerve cell in the brain
8
Disturbance that transfers energy
9
Tissue that contracts for movement
11
Infectious microscopic agent