Teacher: Roberta Conti School year 2006/07Comenius project.

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Presentation transcript:

Teacher: Roberta Conti School year 2006/07Comenius project

Teacher: Roberta Conti School year 2006/07Comenius project It is the contamination of air because of gases, liquid or solid substances immission that changes the natural atmosferical composition in a great or small area.

Teacher: Roberta Conti School year 2006/07Comenius project It is up to the diffusion of ashes or gases produced by volcans and fires; Most dangerous gases are: clorhydric acid, sulphurouse anhydride and carbon bioxid.

Teacher: Roberta Conti School year 2006/07Comenius project Best reasons: Iron and steel factories; waste/rubbish burners; Oil refinery; Cement factories; Chemical factories; Heating plants and smoke made by escape- pipe.

Teacher: Roberta Conti School year 2006/07Comenius project Polluting elements produced by human activities; Natural polluting elements. Classes of atmospherical polluting elements: Primary elements-> let in as they are; Secondary elements -> produced by chemical reaction directly into the atmosphere.

Teacher: Roberta Conti School year 2006/07Comenius project OUTDOOR POLLUTION: produced by substances into open spaces, INDOOR POLLUTION: produced by substances that are inside of buildings. Indoor Air Quality index indicated the quality of air inside of buildings. (We know something as 3,000 pollution particles in the air)

Teacher: Roberta Conti School year 2006/07Comenius project The polluting substances that are in the air have a concentration that is up to metereological and climatical condition, to temperature and to the wind speed.

Teacher: Roberta Conti School year 2006/07Comenius project Breathing and circolatory problems, Increasing of cancer, Empoisoning and change of metabolism; (in plants) poisoning and death; Degeneration processes of walls, stones, paints and plasters of buildings.

Teacher: Roberta Conti School year 2006/07Comenius project The invisibile pollution particles associated to air water vapour and dusts, produce a dense and dark fog, said SMOG (smoke + fog).

Teacher: Roberta Conti School year 2006/07Comenius project Pollution provokes: Breathing difficulties; Cronic bronchitis; Cancer.

Teacher: Roberta Conti School year 2006/07Comenius project Using filters, softeners or other safety devices. Building factories in windy areas. Increasing parks and gardens in towns. Providing incentives for use ecological energies.

Teacher: Roberta Conti School year 2006/07Comenius project The air pollution don’t respect any frontier between the countries. It only could be fighted with international planes!!!

Teacher: Roberta Conti School year 2006/07Comenius project Written by: STEFANIA CARANO 2nd class