Across
1
Form of thermal energy
3
Glass that splits light into spectrum
5
Magnetic metallic element
7
Precious yellow metallic element
8
Push or pull on an object
9
Element found in all living things
10
Group of similar cells
Down
1
Second lightest element
2
Tissue that contracts for movement
4
Naturally occurring inorganic solid
6
Our home planet
11
Absolute temperature scale unit
12
Curved glass that refracts light