A-Good & BadB-Where E- The Ozone Layer it is Montreal located 12:00 12:00 12:00 Protocol & 12:00 12:00 12:00 ozone C- D-Ozone harmful friendly human products Teamwork
A- Good & Bad:Ozone can be good or bad depending onwhere it is located. Close to the Earth`ssurface, ground- level, ozone is harmful causesair pollution.Ozone in the stratosphere, high above theEarth, protects human health and theenvironment from harmful ultravioletradiation from the sun.
B- Where it is located:Ozone in the stratosphere, a layer of theatmosphere is located 10 to 30 miles abovethe Earth, serves as a shield, protecting peopleand environment.The stratospheric Ozone Layer filters outharmful sun rays, including a type of sunlightcalled ultraviolet B. Exposures to ultravioletB(UVB) has been linked to cataracts(eyedamage) and skin cancer.
C- Harmful human productsIn the 1996, US products ended for many ofthe chemicals capable of doing the mostserious harm such CFCS, halos, and methylchloroform.D- Ozone friendlyThe clean Air Act includes other steps toprotect the ozone layer. The Act encouragesthe development of “ozone-friendly”substitutes for ozone-destroying chemicals.Many products and processes have beenreformulated to be more “ozone friendly”. Forinstance, refrigerators no longer use CFCS.
E-Montreal Protocol & ozone:Scientists have been monitoring the stratosphericozone layer since 1979s.In the 1980s; scientistsbegan accumulating evidence that the ozone layerwas being depleted. The ozone hole in the regionof the South Pole, which has appeared each yearduring the Antarctica winter (our summer), often isbigger than the continental United States.Between the 1978 and 1997, scientists havemeasured a 5% loss of stratospheric ozone- asignificant amount. Over 190 countries, includingthe major industrialized nations such as the UnitedStates, have signed the 1987 Montreal Protocol,Which calls for stop using the chemicals thatdestroy stratospheric ozone. Countries that signedthe protocol arecommitted to limiting the production and use ofthose chemicals.
FOR MORE INFORMATION YOU CAN VISITwww.epa.gov/ozoneTeamwork:Editor: Rafah HussainoDesigner: Marwa OmarPublisher: Maryam Alraheem & Abeer HammoAlkods High School/Grade: Second secondary scientificSupervisor: Mrs. Tonia Bitar Toniabitar@gmail.com