Across
1
Group of similar cells
4
Push or pull on an object
5
Disturbance that transfers energy
7
Curved glass that refracts light
9
Tectonic landmass section
10
Chemical element in table salt
Down
2
Unit of electric potential
3
Unit of heredity
6
Blocking of light by a celestial body
8
Measure of matter in an object
11
Compound containing oxygen