Across
1
Disturbance that transfers energy
3
Curved glass that refracts light
5
Tectonic landmass section
6
Magnetic metallic element
7
Tissue that contracts for movement
Down
2
Unit of heredity
3
Amplified beam of light
4
Form of thermal energy
5
Glass that splits light into spectrum
8
Blocking of light by a celestial body
9
Nerve cell in the brain