Across
1
Gas form of a liquid
5
Smallest unit of an element
6
Unit of force
7
Push or pull on an object
9
Second lightest element
10
Molten rock beneath Earth surface
Down
2
Blocking of light by a celestial body
3
Disturbance that transfers energy
4
Element found in all living things
8
Naturally occurring inorganic solid
11
Path of a planet around the sun