Stratospheric Ozone

033 - Stratospheric Ozone

In this video Paul Andersen explains how stratospheric ozone protects humans from ultraviolet light. He explains how stratospheric ozone is formed when diatomic oxygen absorbs an ultraviolet photon and is split into two free oxygen atoms. The free atoms bond with another oxygen molecule to form an ozone molecule creating a stable ozone layer. He then explains how chlorine atoms released from chlorofluorocarbon molecules act as an enzyme to breakdown up to 100,000 ozone molecules. The Montreal Protocol was a treaty signed by countries on the planet to reduce the amount of CFCs in the atmosphere to protect the ozone layer.

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Music Attribution

Intro
Artist: CosmicD
Creative Commons Atribution License

Outro
Title: String Theory
Artist: Herman Jolly

All of the images are licensed under creative commons and public domain licensing:

[MonicaFrenchBaltimore]

I am honestly stuck on "by the time we get to 2060, essentially, all of that ozone is gone... all of that protection as well." That is a terrifying statement!

[lianxie]

This was presented in such a great structure! Loved the end recap + visual memory builder!

[surendrapalsingh]

Great video. Nicely explained the underlying mechanism on how ozone is produced and depleted. Thanks sir :)

[mainukalita]

This is so wonderfully explained.excellent

[bowtieteddy]

For anyone else who got the assignment I'm doing lol:

What is the difference between "good" and "bad" ozone?
1:35
What are CFC's and how do they destroy the ozone?
4:44
How is ozone formed and destroyed?
2:20
Where did the hole develop in the ozone and why did it happen there?
5:33
Explain the Montreal Protocol and how it has helped fix the ozone layer
5:48

[JacquelineTrudel]

I LOVE YOU! THANK YOU!
Your videos are so helpful.
You summarize everything so beautifully with your diagram.
I subbed :D I'm going to need you throughout university.

[studywithme]

how lovely it is to be studying this lesson for your final exam when you have a terrible sunburn because you were too stubborn and didn't apply sunscreen when you went swimming yesterday.... very lovely indeed!

[andrewhaddad]

@ 5:20
What you mean to say is its acting as a catalyst
thank you very much! great video!

[Dave-qjyg]

Good presentation. Quick, clear and concise. And all withing my attention span.

[clouddust]

your videos made me get a 6/7 on my IB examinations!!! you are great!

[rashadal]

4:13 "Then we make that good old fashioned oxygen again" LOL

[kulsoomnadeem]

TYSM I HAVE A BIO TEST TOMORROW AND THIS HELPED SM

[vishalmangaraj]

This is super helpful 👌, thank you sir

[ibraheemali]

Thankyou for the sinplified concepts....Can you plz explain the scientific backing of
1. using ozone generators to clean the air 2. using ozone therapy to treat cancer
3 water treated with ozone for purification?

[Echodonut]

Quite helpful indeed! I don't study the environment, and did not really know how the ozone-CFC interaction worked. But now I am interested. How does CO2 influence ozone on a molecular level?

[aribahwangde]

Very very helpful couldn't clear the concept before this...Thank you much. The flow chart was really easy to understand and made the concept crystal clear !

[Gameplayery]

just a headsUp, the annotations don't work at the end of the video, but the information itself was immensly helpfull

[TNash]

Wish I had you for class i knew about this when I took environmental chemistry and air pollution class

[k-easy]

Teacher: kids make sure to do ur homework!
Me: hehe copy

[dampudulom]

Thank you! I wish you were my teacher i would not be struggling so much now.