Across
1
Basic unit of life
3
Unit of force
5
Gas form of a liquid
8
Push or pull on an object
11
Magnetic metallic element
12
Form of thermal energy
Down
2
Compound containing oxygen
4
Disturbance that transfers energy
6
Amplified beam of light
7
Ball of burning gas in space
9
Natural satellite of Earth
10
Unit of power
13
Our home planet