横向
1
Precious yellow metallic element
4
Blocking of light by a celestial body
5
Unit of power
7
Ball of burning gas in space
9
Biological catalyst
11
Glass that splits light into spectrum
14
Path of a planet around the sun
15
Natural satellite of Earth
纵向
2
Push or pull on an object
3
Mass per unit volume
6
Substance with pH below 7
8
Magnetic metallic element
10
Force that attracts objects together
12
Second lightest element
13
Group of similar cells