Across
1
Push or pull on an object
5
Unit of force
6
Amplified beam of light
7
Tectonic landmass section
8
Unit of power
10
Our home planet
12
Center of an atom or cell
Down
2
Group of similar cells
3
Basic unit of life
4
Ball of burning gas in space
7
Particle of light
9
Infectious microscopic agent
11
Second lightest element
13
Magnetic metallic element