ReviewLecture3b_2014

The earths atmosphere absorbs uvc wavelengths health

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ry December The ozone hole begins to develop in June, peaks in August, and closes again by November. Ozone Hole History 1979- 1912 Ozone Chemistry Where is the ozone? The majority of the ozone is in the stratosphere Ozone Chemistry cont. ozone absorption Ozone Absorp7on: Absorp=on of UV photon results in Photo- dissocia=on of ozone molecules 250 300 wave length (nm) O 3 + h⌫ ! O 2 + O ⇤ The UV photon is blocked from Reaching the earth’s surface Some Proper=es of UV radia=on •  •  •  •  High energy radia=on Can promote bond dissocia=on and photochemical reac=ons Harmful to biological organism Causes skin cancer and eye damage More Facts about UV Radia7on Energy from the sun reaches the earth as visible, infrared, and ultraviolet rays . The spectrum is comprised...
View Full Document

This document was uploaded on 03/14/2014.

Ask a homework question - tutors are online