Across
1
Unit of electric potential
3
Curved glass that refracts light
4
Fourth state of matter
6
Basic unit of life
7
Natural satellite of Earth
8
Gas essential for breathing
10
Force that attracts objects together
Down
1
Hottest planet in solar system
2
Unit of energy
5
Disturbance that transfers energy
6
Solid with repeating atomic pattern
9
Unit of heredity