Across
1
Blocking of light by a celestial body
6
Reddish electrical conductor
8
Molten rock beneath Earth surface
9
Glass that splits light into spectrum
10
Naturally occurring inorganic solid
11
Icy body with a tail near the sun
Down
2
Basic unit of life
3
Unit of electric potential
4
Chemical element in table salt
5
Push or pull on an object
7
Particle of light
12
Smallest unit of an element
13
Second lightest element
14
Magnetic metallic element