Across
1
Disturbance that transfers energy
4
Tectonic landmass section
5
Curved glass that refracts light
6
Nerve cell in the brain
8
Hottest planet in solar system
9
Center of an atom or cell
10
Unit of energy
11
Amplified beam of light
Down
2
Solid with repeating atomic pattern
3
Basic unit of life
6
Unit of force
7
Second lightest element
8
Gas form of a liquid