Across
1
Chemical element in table salt
3
Tectonic landmass section
5
Magnetic metallic element
6
Substance with pH above 7
8
Element found in all living things
10
Curved glass that refracts light
13
Form of thermal energy
Down
2
Blocking of light by a celestial body
4
Tissue that contracts for movement
7
Disturbance that transfers energy
9
Path of a planet around the sun
11
Gas form of a liquid
12
Amplified beam of light