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Our Disappearing Ozone
UV Radiation Causes skin cancer, cataracts, weakened immune system Creates smaller crop yields Damages fish Changes biogeochemical cycles
What Is The Ozone Layer?
Upper Ozone Chlorofluorocarbons (CFCs) Methyl bromide Halons Methyl chloroform
Ozone Hole Appears each spring in Antarctica Results from an abnormally thin ozone layer Discovered in 1980s
Creation Of An Ozone Hole
Ozone Action Days Conserve electricity Carpool Don’t use gas- powered equipment Refuel after dusk Limit engine idling
Objective: Section 18-8 to 18-9 Describe stratospheric ozone depletion and solutions to protect the ozone layer.
Ozone Layer O 3 Absorbs the sun’s UV radiation Stratosphere 20-50km above the Earth’s surface.
The Ozone Hole. The Ozone Layer Stratospheric ozone Block 95% harmful UV radiation
Ozone Depletion Sean Farrell. What is it? The ozone layer is a concentration of ozone molecules in the stratosphere. The stratosphere, the next higher.
Is a layer in Earths atmosphere which contains a lot of concentration of ozone (O 3 ). This layer absorbs 97-99% of the suns ultraviolet light, which.
Troposphere Stratosphere Ozone layer is a thin, fragile shield that contains relatively high concentrations of ozone. It shields the entire Earth.
Essential Questions: 1) What role have humans played in the destruction of the Ozone Layer? 2) Why should humans be concerned about the destruction of.
Solving the Ozone Puzzle. Troposphere Layer where our weather takes place. Layer closest to the earth’s surface. Layer we breathe. Ozone is created here.
The Ozone Shield The ozone layer is an area in the stratosphere where ozone is highly concentrated. It absorbs most of the UV rays from the sun. Ozone.
1 Global Change: Ozone Depletion Environmental Sustainability Educational Resources prepared by Gregory A. Keoleian Associate Research Scientist, School.
Chapter 13, Section 2: the ozone shield Standards: SEV4f ATMOSPHERE & CLIMATE CHANGE.
By: Chuck & Tom. The Ozone layer is a layer in the stratosphere which protects the Earth from the harmful effects of ultra-violet radiation from space.
Question 4 Explain how information on changes in atmospheric ozone concentrations is obtained Anita and Lily.
Climate Change and Ozone Loss Chapter 21. Key Concepts Changes in Earth’s climate over time Factors affecting climate Possible effects of global.
Atmosphere Review Composition of air –Nitrogen (78%) –Oxygen (21%) –Water vapor (0.01-4%) –Argon (< 1%) –Carbon dioxide (0.037%)
Climate Change and Ozone Loss G. Tyler Millers Living in the Environment 14 th Edition Chapter 21 G. Tyler Millers Living in the Environment 14 th Edition.
Climate Change and Ozone Loss G. Tyler Miller’s Living in the Environment 13 th Edition Chapter 18 G. Tyler Miller’s Living in the Environment 13 th Edition.
The project o f the student of Class 7 Kasachkova Alina The Center of Children's Creation "Sviblovo“ Moscow.
Section 9 and 10 Ozone Depletion What is the threat from ozone depletion? Good versus bad ozone. What causes ozone depletion? What happens to ozone levels.
Climate Change and Ozone Loss Chapter 18 “We are embarked on the most colossal ecological experiment of all time – doubling the concentration in the atmosphere.
THE OZONE LAYER HOLE. What is it? The atmosphere is a layer of gas involving the Earth. This layer protects life from the sun radiations. The ozone layer.
Ozone Depletion The ozone layer is a protective shield of ozone [0 2 ] in the upper area of the atmosphere.
Ozone is made of three oxygen atoms - O 3 Ozone. OZONE – A Greenhouse gas Greenhouse gas. Near ground it is a nasty pollution In the stratosphere it protects.
Depletion of the Ozone Layer. Introduction: The ozone layer or stratosphere is a belt of naturally occurring gas which envelops the Earth.
The Ozone Layer Done By: Yrmila Lalloo 1J. What is the Ozone Layer? The ozone layer is a relatively thin layer of gas in the earth’s atmosphere that protects.
AIM: What are the effects of air pollution on the environment Do Now: What is air pollution? Explain why it is harmful.
The ozone hole is a completely different phenomenon to global warming! There are links between them.
OZONE DEPLETION A Significant Environmental Issue.
Plan ► What is ozone? ► Where is it found? ► What is its origin? ► Importance ► Ozone depletion ► Impacts ► Solutions: protecting the ozone layer.
It’s not just about Global Warming… The Problem with the Ozone Layer.
Ozone D. Crowley, Ozone To know what gases can cause the hole in the ozone layer, and what affect this can have on humans Friday, January 22, 2016.
Chapter 20 Ozone Depletion. OZONE DEPLETION IN THE STRATOSPHERE Ozone thinning: caused by CFCs and other ozone depleting chemicals (ODCs). Increased.
The Ozone Shield Section 13.2 Objectives: 1. Explain how the ozone layer shields the Earth from much of the sun’s harmful radiation. 2. Describe the damaging.
What is the Ozone Layer? On a piece of scrap paper, write down what you think the ozone layer is.
Ozone Depletion. OZONE DEPLETION IN THE STRATOSPHERE Less ozone in the stratosphere allows for more harmful UV radiation to reach the earth ’ s surface.
Ozone Depletion 10.4 Chapter 15. Ozone Layer and the UV Spectrum UV-A: unabsorbed, starting of skin cancer UV-B & UV-C (99% absorbed) – Damage to tissues.
Protecting the Ozone Layer. Stratospheric Ozone Depletion Ground-level (tropospheric) ozone: harmful pollutant Stratospheric ozone: shields the Earth.
Ozone Depletion in the Stratosphere The other story Ch. 19.
Chapter 1: Introduction to Chemistry Section 1.1 –The Stories of Two Chemicals.
Outline of Presentation What is the Ozone layer? What is the Ozone layer? How is ozone created and destroyed? How is ozone created and destroyed? What.
Stratospheric OZONE - O 3 Forms km above the earth’s surface. Blocks harmful % of UV radiation from reaching earth’s surface. Chemistry: Up to 98%
Ozone Depletion O3O3. Ozone Factoids Good in the stratosphere, bad in the troposphere Produced at a height of ~50 km, settles to a height of 23 km Filters.
Understanding & Tracking Antarctica’s Ozone Hole Based on material from ecohealth101.org & ozonewatch.gsfc.nasa.gov.
Our Natural Protection Against UV light. The Ozone layer that blocks out the sun’s harmful rays is being depleted. Todd Olsen Professor Kimball Chem 1A.
DO NOW 1. What type of pollution is caused by fertilizers? 2. What is it called when rows in a field are plowed in curves instead of straight lines? 3.
Ozone Depletion. Ozone Layer Ozone layer absorbs 97% to 99% of ultraviolet (UV) radiation from the sunOzone layer absorbs 97% to 99% of ultraviolet (UV)
OZONE LAYER & CFC’S. Understanding Stratospheric Ozone Discovered in 1839 by Christian Schonbein Pale blue, unstable, made up of 3 oxygen atoms Found.
Atmosphere and Climate ChangeSection 2 The Ozone (O 3 ) Shield Ozone layer: layer of the atmosphere at an altitude of 15 to 40 km where ozone absorbs UV.
Aim: How have air pollutants affected the atmosphere?
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