Speech On The Ozone Layer

However, the effect of this process was unknown. Within three months, the pair developed the CFC ozone depletion theory. They determined that as the CFCs are broken down by solar radiation, the chlorine atoms are released into the atmosphere. As the chlorine atoms encounter ozone molecules, the two react to form chlorine oxide and an oxygen molecule. When the chlorine oxide molecule encounters another ozone molecule, two oxygen molecules form, the chlorine molecule is released, and the process begins again. Molina determined that over 100,000 ozone molecules could be destroyed by a single chlorine atom. In addition, CFCs could contain up to four atoms of chlorine per molecule. Molina predicted that in 60 years, CFCs could destroy 7% of the ozone in the earth's

What are some of the chemicals that caused the ozone hole to form over the stratosphere in Antarctica?

The ozone is a form of oxygen that combines three oxygen atoms in each molecule. Its important because its like a filter. CFCS, also known as, chlorofluorocarbons are used to break up some of the ozone molecules

7. What are the necessary ingredients for ozone creation, excluding those that are readily available in the atmosphere? Why could there be a city with a lot of cars but relatively little ozone pollution? Cars, Trucks, PM, HC, NOx, CO, and SO2. Depending on what climate is in that city the ozone pollution would be high or low.

How do CFCs or chlorofluorocarbons affect Canada’s Ozone layer. To answer this question we first have to understand chlorofluorocarbons and the earth's ozone layer. Chlorofluorocarbons are chemical compounds made up of three chlorine atoms. One fluorine atom and 1 carbon atom. There were many uses for CFCs ranging from, being used as coolants in refrigerants to propellants for aerosols to being used as solvents for dry cleaning. As CFCs are non- flammable and not very toxic we thought they were a revolutionary compound, but unfortunately CFCs were one of the leading causes for the depletion of our ozone layer. ozone is a type of oxygen, an ozone molecule consists of three oxygen atoms whereas a regular oxygen molecule only consists of two.

What are the harmful effects of bad ozone and what is being done to reduce the ozone pollution?

Chlorofluorocarbons, CFCs: These substances are also of concern in connection with the destruction of stratospheric ozone (Chapter 2). Like N2O, they have no tropospheric sinks, but are infrared absorbers. Up to 1984, the tropospheric concentrations of three of the major commercial CFCs...

My first reason is because of a chemical called chlorofluorocarbons (CFCs). It has a tendency to drift up to the layer of ozone gas that surrounds the Earth and break up the ozone molecules. CFCs were found in aerosol cans that sprayed substances like deodorant and hairspray and in refrigerants, fire extinguishers and solvents for cleaning. Other ozone depleting chemicals were found

“CO2 gas emissions” is a mystical term which everyone should pay attention to. C02 gas is a colorless, odorless gas that is present in the atmosphere and is formed when any fuel containing carbon is burned. Plants and trees are using it in the process of photosynthesis. Carbon dioxide is also used in refrigeration, fire extinguishers, and carbonated drinks. In other words this is the gas we need to fight with! By using fossil fuels in almost everything we do, we make a huge cloud of gas and this is warming up the world. By doing this, we cause serious damage to the nature and we may have an irreversible effect on it and the future.

Attention Getting Device: On November 21, 2017 NASA published an article on the issue of global climate change which quoted this, ''NASA tool link port-city seal levels to regional ice melts''. NASA has been working to minimize the effect of global climate change and recently it has developed 'NASA tools'. This particular tool links changes in sea level of around 293 global port cities. Most specifically, the tool links changes seen in vulnerable regions, such as Greenland and the Antarctic Peninsula, where ice lands are melting rapidly. Such development will allow coastal planners to be aware and prepare for rising seas level for years to come.

The third gas is nitrous oxide.  Nitrous oxide has pretty much the same effect on the ozone as the chloroflourocarbons, but nitrous oxide only destroys about one-forth of what the chloroflourocarbons destroy.

Why is the ozone layer of much concern to scientists and environmentalists? The ozone layer is quite beneficial to human life and existence. The destruction of this layer has been linked to the now common health conditions such as cancers, skin conditions and cataracts among others. It is apparent that, without the ozone layer, all humanity would be lost to disease.

Air is an indispensable part of human, animal and plant lives. Without it, no organisms would be able to survive on Earth (Reference, 2017). Due to excessive human activities, air pollution has become a detrimental worldwide issue in current days (Sciencing, 2017). However, scientists have found new chemicals that can assist in improving the air quality (Phys.org, 2017). Moreover, humans are able to adopt many methods to help decrease the severity of contamination released into the earth’s atmosphere. This investigation is linked to ‘application and limitation’ in ‘science as a Human Endeavour’.

National Geographic wrote the article “Good Ozone, Bad Ozone”. The article is about how there are both good parts of the ozone layer and some bad parts of the ozone layer. The ozone layer is only good when the gas is high above the ground if it is not then it can be very harmful for us. The bad thing about the ozone layer is it is made up of poisonous gasses. Approximately 90 percent of the earth’s ozone is called the stratosphere. Many scientists believe that ozone layer is being destroyed due to chemicals we use. The National Geographic was motivated to write this article to educate us on how the ozone layer has a good and a bad layer. Even though, the ozone layer is helpful because it protects us from harmful ultraviolet rays. It can be bad when the layer is depleted and

Chlorofluorocarbons (CFC’s): CFC’s are lowering the average concentration of ozone in the stratosphere. “Since 1978 the use of CFC’s in aerosol cans has been banned in the United States, Canada and most Scandinavian countries. Aerosols are still used around the world and accounts for 25% of global CFC’s use”. (Miller 448). Spray cans discarded or leaking refrigerator and air conditioning equipment and the burning plastic foam products release the CFC’s into the atmosphere. Depending on the type, CFC’s stay in the atmosphere from 22 to 111 years.” Chlorofluorocarbons move up to the stratosphere gradually over several decades. Under high energy ultra violet (UV) radiation break them down and release chlorine atoms, which speed up the breakdown of ozone (O3) into oxygen (O2). Chlorofluorocarbons, also known as Freons, are green house gas that contributes to global warming. Photochemical air pollution is commonly referred to as “smog”. Smog is the contraction of the words smoke and fog, smog has been caused by water condensing on smoke particles, usually from burning coal. With the introduction of petroleum to replace coal economies in countries, photochemical smog has become predominant in many cities, which are located in sunny warm and dry climates with many motor vehicles. The worst episodes of