横向
1
Center of an atom or cell
3
Molten rock beneath Earth surface
5
Group of similar cells
7
The Red Planet
10
Second lightest element
纵向
2
Substance with pH above 7
4
Curved glass that refracts light
6
Unit of power
8
Glass that splits light into spectrum
9
Smallest unit of an element
11
Icy body with a tail near the sun