Across
1
Unit of power
3
Particle of light
4
Our home planet
7
Tissue that contracts for movement
8
Solid with repeating atomic pattern
9
Substance with pH below 7
Down
2
Form of thermal energy
3
Tectonic landmass section
5
Molten rock beneath Earth surface
6
Icy body with a tail near the sun
10
Amplified beam of light