Across
1
Tectonic landmass section
3
Infectious microscopic agent
4
The Red Planet
5
Path of a planet around the sun
7
Tissue that contracts for movement
9
Measure of matter in an object
10
Substance with pH above 7
Down
1
Glass that splits light into spectrum
2
Ball of burning gas in space
3
Hottest planet in solar system
6
Particle of light
8
Mass per unit volume