Across
1
Center of an atom or cell
4
Compound containing oxygen
6
Unit of force
Down
2
Form of thermal energy
3
Curved glass that refracts light
5
The Red Planet
7
Reddish electrical conductor
8
Tissue that contracts for movement
Center of an atom or cell
Compound containing oxygen
Unit of force
Form of thermal energy
Curved glass that refracts light
The Red Planet
Reddish electrical conductor
Tissue that contracts for movement