Across
1
Form of thermal energy
3
Natural satellite of Earth
5
Second lightest element
7
Unit of power
8
Infectious microscopic agent
Down
2
Element found in all living things
4
Center of an atom or cell
6
Our home planet
Form of thermal energy
Natural satellite of Earth
Second lightest element
Unit of power
Infectious microscopic agent
Element found in all living things
Center of an atom or cell
Our home planet