Across
1
Tectonic landmass section
3
Center of an atom or cell
4
Mass per unit volume
8
Our home planet
Down
2
Form of thermal energy
3
Nerve cell in the brain
5
Push or pull on an object
6
Curved glass that refracts light
7
Unit of power
Tectonic landmass section
Center of an atom or cell
Mass per unit volume
Our home planet
Form of thermal energy
Nerve cell in the brain
Push or pull on an object
Curved glass that refracts light
Unit of power