Across
1
Preserved remains of ancient life
3
Glass that splits light into spectrum
4
Unit of power
5
Measure of matter in an object
6
Second lightest element
8
Precious yellow metallic element
Down
2
Substance with pH above 7
3
Fourth state of matter
4
Disturbance that transfers energy
7
Amplified beam of light
9
Solid with repeating atomic pattern