Across
1
Molten rock beneath Earth surface
4
Ball of burning gas in space
5
Basic unit of life
6
Absolute temperature scale unit
8
Unit of energy
10
Gas form of a liquid
Down
2
Disturbance that transfers energy
3
Glass that splits light into spectrum
5
Element found in all living things
7
Tissue that contracts for movement
9
Icy body with a tail near the sun
11
Curved glass that refracts light