Across
1
Smallest unit of an element
4
Unit of energy
5
Push or pull on an object
6
Force that attracts objects together
11
Tissue that contracts for movement
Down
2
Substance with pH above 7
3
Element found in all living things
7
Unit of power
8
Nerve cell in the brain
9
Disturbance that transfers energy
10
Particle of light
11
Naturally occurring inorganic solid