Across
1
Natural satellite of Earth
2
Ball of burning gas in space
4
Compound containing oxygen
5
Tectonic landmass section
8
Element found in all living things
9
Tissue that contracts for movement
Down
1
Naturally occurring inorganic solid
3
Nerve cell in the brain
6
Mass per unit volume
7
Particle of light
8
Basic unit of life
10
Absolute temperature scale unit
11
Push or pull on an object
12
Substance with pH above 7
13
Smallest unit of an element