横向
1
Solid with repeating atomic pattern
2
Magnetic metallic element
6
Unit of heredity
7
Amplified beam of light
8
Reddish electrical conductor
12
Mass per unit volume
纵向
1
Element found in all living things
3
Path of a planet around the sun
4
Force that attracts objects together
5
Smallest unit of an element
9
Nerve cell in the brain
10
Naturally occurring inorganic solid
11
Form of thermal energy
13
Unit of power