Across
1
Solid with repeating atomic pattern
4
Our home planet
7
Fourth state of matter
8
Amplified beam of light
10
Magnetic metallic element
11
Center of an atom or cell
Down
2
Substance with pH below 7
3
Disturbance that transfers energy
5
Blocking of light by a celestial body
6
Path of a planet around the sun
9
Molten rock beneath Earth surface