Across
1
The Red Planet
4
Form of thermal energy
5
Unit of energy
6
Hottest planet in solar system
9
Our home planet
10
Tectonic landmass section
12
Tissue that contracts for movement
14
Path of a planet around the sun
Down
2
Curved glass that refracts light
3
Fourth state of matter
7
Unit of force
8
Biological catalyst
11
Solid with repeating atomic pattern
13
Reddish electrical conductor
15
Molten rock beneath Earth surface