Across
1
Tissue that contracts for movement
4
Our home planet
5
Absolute temperature scale unit
7
Hottest planet in solar system
8
Blocking of light by a celestial body
9
Gas form of a liquid
11
Measure of matter in an object
Down
2
Nerve cell in the brain
3
Tectonic landmass section
6
Center of an atom or cell
10
Unit of force