Across
1
Glass that splits light into spectrum
4
Unit of energy
6
Biological catalyst
7
Basic unit of life
8
Icy body with a tail near the sun
9
Smallest unit of an element
13
Our home planet
14
Amplified beam of light
Down
2
Molten rock beneath Earth surface
3
Curved glass that refracts light
5
Push or pull on an object
10
Particle of light
11
Mass per unit volume
12
Naturally occurring inorganic solid