Across
1
Particle of light
3
Precious yellow metallic element
4
Unit of energy
5
Magnetic metallic element
7
Tissue that contracts for movement
10
Hottest planet in solar system
Down
1
Positive particle in nucleus
2
Ball of burning gas in space
3
Unit of heredity
6
Tectonic landmass section
8
Curved glass that refracts light
9
Unit of electric potential