横向
1
Center of an atom or cell
3
Push or pull on an object
7
Substance with pH below 7
9
Reddish electrical conductor
10
Disturbance that transfers energy
11
Measure of matter in an object
12
Group of similar cells
13
Path of a planet around the sun
纵向
2
Tectonic landmass section
4
Glass that splits light into spectrum
5
Unit of energy
6
Chemical element in table salt
8
Element found in all living things