Across
1
Unit of energy
3
Tissue that contracts for movement
4
Fourth state of matter
7
Push or pull on an object
8
Ball of burning gas in space
11
Second lightest element
12
Gas essential for breathing
Down
2
Solid with repeating atomic pattern
5
Path of a planet around the sun
6
Unit of heredity
9
Substance with pH above 7
10
Smallest unit of an element
13
Hottest planet in solar system
14
Tectonic landmass section