Across
1
Nerve cell in the brain
4
Disturbance that transfers energy
5
Positive particle in nucleus
7
Smallest unit of an element
8
Tissue that contracts for movement
10
Blocking of light by a celestial body
Down
2
Natural satellite of Earth
3
Compound containing oxygen
5
Particle of light
6
Unit of energy
8
Naturally occurring inorganic solid
9
Gas form of a liquid
11
Tectonic landmass section