Across
1
Chemical element in table salt
4
Curved glass that refracts light
5
Disturbance that transfers energy
6
Unit of electric potential
8
Unit of heredity
Down
2
Second lightest element
3
Blocking of light by a celestial body
7
The Red Planet
Chemical element in table salt
Curved glass that refracts light
Disturbance that transfers energy
Unit of electric potential
Unit of heredity
Second lightest element
Blocking of light by a celestial body
The Red Planet