横向
1
Magnetic metallic element
3
Our home planet
5
Unit of force
9
Preserved remains of ancient life
10
Glass that splits light into spectrum
11
Push or pull on an object
纵向
2
Unit of energy
4
Particle of light
6
Group of similar cells
7
Force that attracts objects together
8
Curved glass that refracts light
12
The Red Planet