Across
1
Tissue that contracts for movement
6
Unit of energy
7
Form of thermal energy
10
Substance with pH below 7
11
Force that attracts objects together
13
Reddish electrical conductor
Down
2
Basic unit of life
3
Second lightest element
4
Center of an atom or cell
5
Our home planet
8
Push or pull on an object
9
Gas form of a liquid
12
Absolute temperature scale unit
14
Hottest planet in solar system