横向
1
Push or pull on an object
2
Precious yellow metallic element
5
Second lightest element
6
Nerve cell in the brain
8
Force that attracts objects together
纵向
2
Unit of heredity
3
Positive particle in nucleus
4
Unit of electric potential
7
Curved glass that refracts light
9
Reddish electrical conductor
10
Measure of matter in an object