Across
1
Ball of burning gas in space
4
Disturbance that transfers energy
5
Tectonic landmass section
6
Biological catalyst
9
Center of an atom or cell
Down
2
Nerve cell in the brain
3
Mass per unit volume
5
Particle of light
7
Measure of matter in an object
8
Glass that splits light into spectrum
10
Push or pull on an object