Across
1
Second lightest element
4
Amplified beam of light
5
Unit of power
6
Unit of electric potential
7
Molten rock beneath Earth surface
8
Tissue that contracts for movement
9
Natural satellite of Earth
Down
2
Solid with repeating atomic pattern
3
Smallest unit of an element
4
Curved glass that refracts light
6
Hottest planet in solar system
10
Precious yellow metallic element