横向
1
Element found in all living things
4
Unit of force
6
Naturally occurring inorganic solid
10
Unit of electric potential
11
Unit of energy
纵向
2
Our home planet
3
Reddish electrical conductor
5
Push or pull on an object
7
Smallest unit of an element
8
Infectious microscopic agent
9
Solid with repeating atomic pattern
12
Force that attracts objects together