Across
1
Our home planet
3
Element found in all living things
6
Particle of light
7
Disturbance that transfers energy
10
Path of a planet around the sun
Down
2
Group of similar cells
3
Icy body with a tail near the sun
4
Smallest unit of an element
5
Form of thermal energy
6
Tectonic landmass section
8
Amplified beam of light
9
The Red Planet
11
Absolute temperature scale unit