Getting Started

Hey Students,

Here are a couple of videos about one project that I found interesting.  It does not go into depth about the actual data collected but it is a place to start.  I encourage you to watch these videos, but find your own topic to research - there are a lot of other options.

1.
2.

April 12, 2011

Protect the Ozone layer


-What is Ozone?


Ozone(trioxygen) is consisting of three oxygen atoms.



-What is Ozone layer?


In the Earth's atmosphere, at aroun 25km high, a layer that has lots of ozone particles.

Ozone in lower atmosphere could be harmful to people, but in higher atmosphere it protect us from ultraviolet(UV) rays. If we get too much of UV rays, we may get skin cancer. That is why we have to protect the Ozone layer.




-Why is the Ozone layer in danger?


There is many cause but the main one is CFC(chloro fluoro carbon) which is using for refrigerant, filling in hairspray or cleaner for semiconductor chip.


(When CFC goes up to Ozone layer and meet the UV rays)

CCl2F2 + UV rays ----> CClF2 + Cl


(Cl that was seperated from CFC meet ozone)

Cl + O3 ---> ClO + O2


(ClO get rid off one more O from ozone, make O2, and leave alone(Cl))

ClO + O ---> Cl + O2


It keep repeatnig this so one CFC particle distroy around 100000 ozone particles.



I think we should reduce the use of CFC gases that is the way to protect the Ozone layer


Posted by at

2 comments:

  1. seulileeApril 12, 2011 at 7:49 PM

    I think you had good information, and that this was a good topic to choose

    ReplyDelete
  2. hamzaApril 15, 2011 at 1:58 PM

    I think you did a great job on presenting this idea and you also had a lot of great ideas.

    ReplyDelete

Note: Only a member of this blog may post a comment.

Subscribe to: Post Comments (Atom)