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PolishVideoComenius2015

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  1. 1. LOGO Myths and facts about ecology
  2. 2. Chlorinated drinking water Myth : You should resign from the chlorination of drinking water. Fact: Contrary to the propaganda practiced by Greenpeace nobody got sick from drinking water free from bacteria by chlorination, while in poor countries, millions of children die from dirty water.
  3. 3. Nuclear energy Myth : One nuclear power plant within a year produces as much radioactive poison as a thousand atomic bombs. Fact : Radioactive waste from nuclear power plants is safely stored deep underground, where it will never leak to the surface, while products of burning coal in power plants remain on the surface.
  4. 4. The energy obtained from 1 g of uranium 235 How many kilos of coal we need to burn to get as much energy as from burning 1 g of uranium 235 Calorific value of 1 kg of coal
  5. 5. The ozone hole Myth : Gases used in refrigerators and freon deodorants are the main cause of the ozone hole. Fact : The ozone hole was noted already in the 50s, when freon was not used on a massive scale yet. Thus, although the freon reduces the amount of ozone, it certainly should not sit in the dock alone. Moreover, in modern refrigerators and sprays other gases are used already for a long time, which are much smaller threat to the ozone layer above our heads.
  6. 6. Energy at rest? Myth : If you do not use the device plugged into the socket, it uses no electricity. Fact : Still not all mobile phone users are aware of the fact that a charger left alone in the socket uses electricity. Doing so we are wasting energy and operating at the expense of the environment. A big waste of electricity is also leaving appliances on "stand by” mode. The equipment in standby mode needs energy.
  7. 7. How much it costs one off the charger power equipment average time use ( per day ) results energy used [ kWh] expense [PLN] 0.4 W 18hours daily 0 0 monthly 0.03 0.02 annually 0.36 0.24 1kWh = 0.6731 PLN
  8. 8. Without the global warming there would be no Sid Myth: If we do not reduce greenhouse gases emissions, in a few years the Arctic ice will melt, sea levels will rise by up to ten meters and oceans will flood the densely populated coast. Facts: Fluctuations in the global temperature are calculated in geologic time, not within a human life. And our world since its beginning repeatedly cooled down and heated up. Hence the movie "Ice Age”.
  9. 9. Waste incinerators Myth: Waste incinerators are a threat because they produce poisonous gases and people living near them are beginning to suffer from cancer, asthma and many other diseases. Facts: Who has not heard that burning garbage is toxic and harmful to the environment? In fact, the escape of air during this process is less harmful than the air we breathe every day. It is also not so that when we burn garbage, we risk cancer, asthma and other diseases of the modern world.
  10. 10. Ecological countryside? Myth : The vision of an ecological, peaceful and rural countryside is unfortunately a myth. Fact : In the forests there are commonly large amounts of garbage. But a small village seems to be top ecological - everyone knows everything about each other, also whether they segregate waste) Also, towns and small municipalities have interesting ecological solutions and ideas which implementation brings measurable results and ... savings.
  11. 11. Natural resources are infinite Myth : Natural resources are finite. Fact : Humanity gradually discovers the value of a substance, and when its usefulness is exhausted, there is a substitute. For example, crude oil for centuries was considered only a threat to agriculture. Only in the mid-nineteenth century mankind suddenly discovered a new use for oil. But even oil is not valuable in itself, it is a valuable energy. However, if humanity would find other, cheaper source of energy, it immediately would forget about the oil.
  12. 12. We are too many on the planet? False: Human population has grown to a serious problem. Fact : Increase in the number of people results mainly from the increase in average life expectancy. Fewer newborns die, too. And ordinary people will live longer rather than shorter. Fear of the continuous increase of the population is due to the fact that we may, in the end, simply run out of space on our planet. But most researchers agree that at the current stage of technology development, the Earth would be able to accommodate 20 or maybe even 30 billion people. And this level could be achieved in nearly 200 years.
  13. 13. Seller makes us stupid people Myth : Any label releases me from thinking. Fact : Many people, seeing the label with the words "organic", "natural", "healthy", "good for the environment" believe these words. We stop being critical, and this is often used by dishonest companies. You have to be inquisitive, verify the facts and myths yourself. Most of the information is at your fingertips, you just must want to check them out.
  14. 14. The signs denoting organic food in Poland and European Union
  15. 15. Asbestos Myth : We must exchange asbestos at any price. Fact : The harmfulness of asbestos has been proven, it is a fact. Indeed, the fine filaments of the substance inhaled by many years with air may result in cancer. However, in order for that to happen, the concentration of fibers must be sufficiently large and the exposure of their operation sufficiently long. It is important to focus on the recycling of used asbestos boards that have already been dismantled from roofs of many houses.
  16. 16. What bag to choose? Myth : Do I need to have reusable shopping bags, yet in the store there are biodegradable ones? Fact : Unfortunately, the myth of the green bags is still doing well. However, there are many ambiguities and misunderstandings. First of all, not all the bags referred to as "biodegradable” are truly biodegradable and, secondly - the certified ones, made from plant materials, must be disposed of properly - to be composted, and that most consumers it is not aware of it. They should be disposed to organic waste containers.
  17. 17. LOGO Activities in our school. February / May 2015
  18. 18. What's your ecological footprint? The students in our school completed a questionnaire about their habits, lifestyle and CO2 emission involved. The results of the survey were presented on the school's noticeboard.
  19. 19. “Melting away for the climate” Comenius educational trip On 13 May our students had a chance to see the local sewage plant and learn about the process of sewage purification. Each step of the process was explained and students could ask questions to the staff who kindly showed guests around the premises.
  20. 20. Sources of information: http://www.menshealth.pl/sprawy/8-mitow-o-ekologii,4335, http://futureblog.pl/2009/07/prawda-czy-falsz-szkodliwe-mity- ekologiczne/ https://www.youtube.com

Notas del editor

  • Nie jestem pewna czy te fakty to prawda. Z jakimi źródłami porównywałeś? Czy nie jest tak, że to zależy od ile tego chloru jest, tzn że przy pewnych dawkach jest szkodliwy?
  • film ??
  • Gdzie zdjęcie tej gazetki?!?!?
  • Gdzie tekst notatki?!?!?!?

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