Across
1
Unit of energy
2
Infectious microscopic agent
5
Second lightest element
6
Reddish electrical conductor
7
Positive particle in nucleus
8
Glass that splits light into spectrum
9
Tectonic landmass section
Down
2
Hottest planet in solar system
3
Ball of burning gas in space
4
Blocking of light by a celestial body
10
Solid with repeating atomic pattern