Across
1
Our home planet
4
Solid with repeating atomic pattern
7
Mass per unit volume
8
Disturbance that transfers energy
Down
2
Unit of energy
3
Nerve cell in the brain
5
Path of a planet around the sun
6
Infectious microscopic agent
Our home planet
Solid with repeating atomic pattern
Mass per unit volume
Disturbance that transfers energy
Unit of energy
Nerve cell in the brain
Path of a planet around the sun
Infectious microscopic agent