The document discusses ozone, the ozone layer, and ozone depletion. It defines ozone as a triatomic form of oxygen found in the upper and lower atmosphere, and the ozone layer as absorbing 97-99% of the sun's ultraviolet light. The ozone layer is being destroyed by chemicals like CFCs released from industries and vehicles. Low temperatures in the upper atmosphere allow chlorine and bromine to destroy ozone, forming a hole. Overexposure to ultraviolet rays due to ozone depletion increases risks of skin cancer, eye damage, immune system damage, and DNA damage. Actions are needed to limit chemicals that deplete ozone and encourage plant growth to increase oxygen production.
The PPT Brief About the Ozone Layer?,
Where it is located?,
Why It is Important?
Why it is depleting?,
What are the effects of the Ozone Depletion?,
What to be done to save the ozone layer ?.
This presentation is about Ozone Layer and chemicals known to cause its depletion.
It also covers information about Ozone Hole and Correlation between Ozone depletion and skin diseases due to Ultra Violet light.It also contains no. of ways to limit ozone deterioration.
very easy and best ppt on ozone layer..
you ca understand easily about ozone layer..
it will be some what helpful for you..
i have describe about each basic points accoring to me..
The PPT Brief About the Ozone Layer?,
Where it is located?,
Why It is Important?
Why it is depleting?,
What are the effects of the Ozone Depletion?,
What to be done to save the ozone layer ?.
This presentation is about Ozone Layer and chemicals known to cause its depletion.
It also covers information about Ozone Hole and Correlation between Ozone depletion and skin diseases due to Ultra Violet light.It also contains no. of ways to limit ozone deterioration.
very easy and best ppt on ozone layer..
you ca understand easily about ozone layer..
it will be some what helpful for you..
i have describe about each basic points accoring to me..
Ozone (O3) is a molecule made up of three atoms of oxygen (O), and very reactive gas.
Bluish gas that harmful to breathe.
Is mostly found in the stratosphere, where it protects us from the Sun’s harmful ultraviolet (UV) radiation.
Although it represents only a tiny fraction of the atmosphere, ozone is essential for life on Earth.
Ozone in the stratosphere— a layer of the atmosphere between 15 and 50 kilometers (10 and 31 miles) above us—acts as a shield to protect Earth’s surface from the sun’s harmful ultraviolet radiation.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
2. What is ozone?
Ozone is a triatomic form of oxygenOzone is a triatomic form of oxygen
found in earth’s upper and lowerfound in earth’s upper and lower
atmosphere.atmosphere.
The layer is a layer absorbs 97%-99% ofThe layer is a layer absorbs 97%-99% of
the sun’s high frequency ultraviolet light,the sun’s high frequency ultraviolet light,
which s potentially damaging to thewhich s potentially damaging to the
forms on earthforms on earth
3. What is ozone layer?
The ozone layer is a layer in earth’s
atmosphere which contains relatively high
concentrations of ozone (O3)(O3)..
The ozone layer, situated in the stratosphere
about 15 to 30 km above the earth’s surface.
Ozone protects living organisms by
absorbing harmful ultraviolet radiation (UVB)
from the sun. The ozonelayer is being
destroyed by CFCs and other substances.
Ozone depletion progressing globally expect
in the tropical zone.
4. How hole is formed?
A combination of low temperatures and
elevated chlorine and bromine
concentrations are responsible for the
destruction of ozone layer in the upper
stratosphere thus forming a hole.
5. Also caused by the green house gases
which are released by industries and
vehicles
6. Meteorological mechanism
Moment of air from one place to another in
the upper stratosphere.
Cold temperature in the upper atmosphere
causes nitric cid to freeze into crystals
forming wispy pink clouds.
8. What are the effects of over
exposure to UV rays ?
Skin cancer
Eye damage such as cataracts
Immune system damage
Reduction in phytoplankton
Damage to DNA in various life-forms ( this
has been observed in Antarctic ice-fish that
lack pigments to shield them from ultra violet
which they have never needed them before)
9. Cont….
Overexposure: increase risk of non-
melanoma and malignant melanoma and
malignant melanoma skin cancer
Possibly other things too that we don’t know
about them
15. How to protect ozone?
Minimize high altitude aircrafts
(oxygen reduction and water
vapour deposition)
Minimize rocket flight ( water
vapour deposition)
Encourage growth of plants that
produce that produce oxygen,
discourage deforestation
Decrease/ control release of
known ozone depleting chemicals
(such as CFCs chlorine fatigue
syndrome) where remotely
possible. Subsidize production of
safer alternatives where possible.
16. Actions taken individually
Don’t use the car so much
Turn of the lights and the faucet when not in
use
Use blankets to stay warm in the winter, wear
thinner clothes in the summer to stay cool
instead of an A.C
Try to use products which are labeled
“ozone-friendly”
17. Cont…
Vehicle air conditioning units should
regularly be checked for leak
Ensure technicians repairing your
refrigerator or air conditioner recover
an recycle the old CFCs so they are
not released into the atmosphere
Suggest school activities to increase
awareness of the problem and to
initiate local action
Minimize industrial refrigerators which
releases chlorine
18. CFC-12 released in troposphere
Carried into stratosphere in
the tropics by slow rising
circulation
CFC-12 photolyzed in
stratosphere by solar UV,
releasing Cl
Cl catalytically destroys
O3
Cl reacts with CH4 or
NO2 to form non-
reactive HCl or
ClONO2
Cl released by
PSCs
How does chlorine get from our refrigerators
to the Antarctic stratosphere?
The life cycle of the Cl atom. All of Cl that makes it into the stratosphere is lifted into the stratosphere at the tropical tropopause. CFCs are very non-reactive. The pathway from the troposphere to the stratosphere takes about 5-6 years.
CFC-12 photolysis rate ~ 1/(100 days) at 25 km
CFC-11 photolysis rate ~ 1/(1000 days) at 25 km