Across
1
Unit of power
2
Infectious microscopic agent
7
Force that attracts objects together
8
Magnetic metallic element
9
Curved glass that refracts light
10
Chemical element in table salt
11
Form of thermal energy
12
Disturbance that transfers energy
13
Gas essential for breathing
Down
2
Unit of electric potential
3
Group of similar cells
4
Unit of force
5
Fourth state of matter
6
Ball of burning gas in space