Across
1
Basic unit of life
2
Path of a planet around the sun
3
Glass that splits light into spectrum
5
Blocking of light by a celestial body
6
Absolute temperature scale unit
10
Measure of matter in an object
11
Precious yellow metallic element
Down
2
Compound containing oxygen
4
Unit of force
7
Push or pull on an object
8
Unit of energy
9
Disturbance that transfers energy