Across
1
Path of a planet around the sun
4
Unit of electric potential
6
Chemical element in table salt
7
Particle of light
Down
2
Group of similar cells
3
Solid with repeating atomic pattern
5
Gas essential for breathing
8
Magnetic metallic element
Path of a planet around the sun
Unit of electric potential
Chemical element in table salt
Particle of light
Group of similar cells
Solid with repeating atomic pattern
Gas essential for breathing
Magnetic metallic element