Across
1
Unit of electric potential
3
Curved glass that refracts light
4
Biological catalyst
8
Unit of energy
10
Second lightest element
12
Gas essential for breathing
13
Group of similar cells
14
Glass that splits light into spectrum
Down
1
Hottest planet in solar system
2
Our home planet
5
Force that attracts objects together
6
Element found in all living things
7
Solid with repeating atomic pattern
9
Absolute temperature scale unit
11
Tissue that contracts for movement