Across
1
Ball of burning gas in space
3
Unit of energy
6
The Red Planet
7
Smallest unit of an element
Down
2
Hottest planet in solar system
4
Disturbance that transfers energy
5
Group of similar cells
8
Fourth state of matter
Ball of burning gas in space
Unit of energy
The Red Planet
Smallest unit of an element
Hottest planet in solar system
Disturbance that transfers energy
Group of similar cells
Fourth state of matter