Across
1
Absolute temperature scale unit
2
Unit of power
4
Element found in all living things
5
Ball of burning gas in space
9
Chemical element in table salt
10
Our home planet
12
Substance with pH above 7
Down
2
Disturbance that transfers energy
3
Curved glass that refracts light
6
Group of similar cells
7
Tectonic landmass section
8
Glass that splits light into spectrum
11
Magnetic metallic element