Ultraviolet radiation

3. Device that protects the eyes from ultraviolet rays.
6. Unit of measurement for wave frequency.
9. Type of ultraviolet radiation more energetic, responsible for tanning and sunburn.
10. Physical quantity that increases with the frequency of electromagnetic waves.
11. Process of eliminating microorganisms using UV-C rays.
12. Protective substance applied to the skin against UV rays.
14. Optical instrument that separates light into its various colors.
16. Skin damage caused by excessive exposure to UV rays.
18. Parameter that indicates the distance between two successive crests of a wave.
19. Type of ultraviolet radiation closest to visible light, less energetic but penetrating.
20. Phenomenon in which light changes direction when it encounters a surface.

1. Gas that absorbs most of the UV-C, protecting life on Earth.
2. Number of oscillations of a wave in one second.
4. Process by which a substance retains part of the light energy that strikes it.
5. The set of all electromagnetic radiations arranged by frequency or wavelength.
7. Main natural source of ultraviolet radiation.
8. Generic term for electromagnetic waves emitted by a source.
13. Coloration of the skin due to melanin production in response to UV rays.
15. Gaseous layer that filters most of the UV rays coming from the Sun.
16. Adjective referring to products or phenomena related to the Sun.
17. Part of the electromagnetic spectrum with a shorter wavelength than visible light.
19. Type of ultraviolet radiation with the shortest wavelength and most dangerous, almost entirely blocked by the atmosphere.