Across
1
Disturbance that transfers energy
2
Form of thermal energy
4
Magnetic metallic element
6
Positive particle in nucleus
9
Glass that splits light into spectrum
10
Blocking of light by a celestial body
Down
2
Second lightest element
3
Fourth state of matter
5
Force that attracts objects together
7
Push or pull on an object
8
Naturally occurring inorganic solid
11
Biological catalyst