横向
1
Blocking of light by a celestial body
5
Force that attracts objects together
7
Substance with pH above 7
8
Infectious microscopic agent
纵向
2
Solid with repeating atomic pattern
3
Path of a planet around the sun
4
Center of an atom or cell
6
Disturbance that transfers energy
9
Smallest unit of an element
10
Second lightest element