Across
1
Positive particle in nucleus
4
Nerve cell in the brain
6
Curved glass that refracts light
Down
1
Particle of light
2
Unit of energy
3
Preserved remains of ancient life
5
Disturbance that transfers energy
7
Hottest planet in solar system
Positive particle in nucleus
Nerve cell in the brain
Curved glass that refracts light
Particle of light
Unit of energy
Preserved remains of ancient life
Disturbance that transfers energy
Hottest planet in solar system