Across
1
Curved glass that refracts light
2
Hottest planet in solar system
3
Molten rock beneath Earth surface
5
Unit of energy
6
Group of similar cells
7
Chemical element in table salt
Down
1
Amplified beam of light
2
Infectious microscopic agent
4
Unit of heredity
8
Solid with repeating atomic pattern
9
Element found in all living things
10
Force that attracts objects together