Across
1
Molten rock beneath Earth surface
4
Fourth state of matter
5
Tissue that contracts for movement
8
Positive particle in nucleus
Down
2
Disturbance that transfers energy
3
Smallest unit of an element
6
Chemical element in table salt
7
Preserved remains of ancient life
8
Tectonic landmass section
9
Reddish electrical conductor
10
Nerve cell in the brain