Across
1
Hottest planet in solar system
3
Natural satellite of Earth
5
Basic unit of life
7
Force that attracts objects together
9
Glass that splits light into spectrum
Down
1
Gas form of a liquid
2
Curved glass that refracts light
4
Measure of matter in an object
6
Nerve cell in the brain
8
Disturbance that transfers energy
9
Tectonic landmass section
10
Biological catalyst