横向
1
Unit of force
4
Gas form of a liquid
7
Push or pull on an object
9
Our home planet
11
Gas essential for breathing
12
The Red Planet
纵向
2
Form of thermal energy
3
Absolute temperature scale unit
5
Mass per unit volume
6
Amplified beam of light
8
Nerve cell in the brain
10
Positive particle in nucleus
13
Smallest unit of an element