横向
1
Unit of electric potential
4
Compound containing oxygen
5
Force that attracts objects together
7
Form of thermal energy
10
Our home planet
11
Infectious microscopic agent
12
Unit of energy
13
Tissue that contracts for movement
纵向
2
Path of a planet around the sun
3
Naturally occurring inorganic solid
6
Smallest unit of an element
8
Blocking of light by a celestial body
9
Gas essential for breathing
14
Substance with pH above 7