Across
1
Group of similar cells
5
Gas form of a liquid
7
Our home planet
8
Hottest planet in solar system
9
Push or pull on an object
10
Curved glass that refracts light
Down
2
Icy body with a tail near the sun
3
Mass per unit volume
4
Disturbance that transfers energy
6
Naturally occurring inorganic solid
11
Form of thermal energy