Across
1
Disturbance that transfers energy
4
Basic unit of life
5
Push or pull on an object
6
Path of a planet around the sun
8
Chemical element in table salt
10
Hottest planet in solar system
Down
2
Blocking of light by a celestial body
3
Our home planet
7
Unit of force
9
Icy body with a tail near the sun
11
The Red Planet