Across
1
Tissue that contracts for movement
5
Path of a planet around the sun
7
Substance with pH above 7
9
Compound containing oxygen
11
Blocking of light by a celestial body
Down
2
Our home planet
3
Glass that splits light into spectrum
4
Group of similar cells
6
Chemical element in table salt
8
Solid with repeating atomic pattern
10
Element found in all living things