Across
1
Hottest planet in solar system
4
Push or pull on an object
6
Tectonic landmass section
8
Gas essential for breathing
10
Our home planet
12
Measure of matter in an object
Down
2
Absolute temperature scale unit
3
Curved glass that refracts light
5
Preserved remains of ancient life
7
Substance with pH above 7
9
Nerve cell in the brain
11
Chemical element in table salt