Across
1
Unit of force
3
Ball of burning gas in space
7
Push or pull on an object
8
Element found in all living things
9
The Red Planet
10
Glass that splits light into spectrum
11
Disturbance that transfers energy
Down
2
Path of a planet around the sun
4
Curved glass that refracts light
5
Absolute temperature scale unit
6
Blocking of light by a celestial body