Presentation on theme: "World pollution presentation Learning objective Create a PowerPoint® presentation that expresses an opinion on a subject you feel strongly about. –You."— Presentation transcript:
World pollution presentation Learning objective Create a PowerPoint® presentation that expresses an opinion on a subject you feel strongly about. –You should plan, draft and organise your content carefully. –Judge how much to write and how much detail to include. –Present your information and ideas in a logical and persuasive sequence. –Use appropriate style and language for your purpose and audience. –Use a range of supporting information, researched from the internet, in a variety of media to present your argument. For example, text, pictures, video. –Literacy curriculum references: Wt/L2.1, 2, 3, 4, 5, 6, 7. –ICT skills: use PowerPoint® software; use search engines; use hyperlinks to insert digital images.
World pollution is a serious problem in this world we live in, and we need to try and find a way to stop or reduce this dire problem.
This is a diagram showing the over consumption of the top 20% of the world’s richest people.
Pollution is always in the news headlines. Here is another way in which the Earth’s precious resources are being ruined. BBC News story about coral reefs Jackie Mace: You need to link to the first audio and video clip listed on the following page of the BBC website: c.co.uk/cgi- bin/search/resul ts.pl?tab=all&go =homepage&q= coral+damage& Search.x=0&Se arch.y=0&Searc h=Search&scop e=all Jackie Mace: You need to link to the first audio and video clip listed on the following page of the BBC website: c.co.uk/cgi- bin/search/resul ts.pl?tab=all&go =homepage&q= coral+damage& Search.x=0&Se arch.y=0&Searc h=Search&scop e=all
Water vapourWater vapour, carbon dioxide and methane form a natural blanket of air around the Earth. However, the burning of fossil fuels and deforestation has led to a massive increase in the amount of carbon dioxide released into the atmosphere. We are also releasing larger quantities of other greenhouse gases, such as methane and nitrous oxide.carbon dioxidemethanefossil fuels deforestationcarbon dioxide atmospheregreenhouse gasesnitrous oxide
The surface of the Earth is heated by the Sun. As it warms up, it reflects heat back into the atmosphere.
About 70% of the Sun's energy is radiated back into space. But some of the infrared radiation is trapped by greenhouse gases, which warm the atmosphere, and reflect heat back down to Earth.
As a result of the greenhouse effect, the Earth is kept warm enough to make life possible. But some scientists say that increased emissions of greenhouse gases are disturbing the balance of this complex system, causing global warming. In the last 100 years, the average global temperature has increased by about 0.4°C to 0.8°C.
A quiz on global climate change 1.By how much has sea level risen in the last century? A: 0–5cm B: 10–15cm C: 15–20cm D: 25–35cm 2.What is the Earth’s average temperature? A: 11°C B: 15°C C: 19°C D: 22°C 3.Carbon dioxide accounts for what percentage of greenhouse gas emissions: A: 25% B: 34% C: 63% D: 78% 4.In the United States, average greenhouse gas emissions per person in 1995 were: A: 2 tonnes B: 3.5 tonnes C: 5.2 tonnes D: 6.6 tonnes 5.In Switzerland, average greenhouse gas emissions per person in 1995 were: A: 2 tonnes B: 3.5 tonnes C: 5.2 tonnes D: 6.6 tonnes 6.The Kyoto protocol commits countries in the developed world to cut greenhouse emissions by 2012 by: A: 5% below 1990 levels B: 25% below 1990 levels C: 30% below 1990 levels D: 60% below 1990 levels
Tot up your top scores!! 0 – Tut tut! You need to work on your greenhouse knowledge 1–3 – Good, but you could do better 3–5 – Excellent – but try to top it up – there’s always room for improvement! 6 – FANTASTIC – you really are the PITs – Professors In Training! 1 = C4 = C 2 = C5 = C 3 = B6 = C
Internet sources used for this slideshow ghouse_1.stm on audio and video nbwm=1&bbram=1 String=topic:pollution_environment&mode=bool&x=14&y= Jackie Mace: All these links need to be live. Jackie Mace: All these links need to be live.
Water vapour – moisture suspended in the air. Carbon dioxide – a gas with no colour or smell that occurs naturally. Methane – another gas with no colour or smell that occurs naturally. Fossil fuels - natural energy such as coal or gas formed by the Earth. Deforestation – clearing an area of its forests or trees. Atmosphere – the layer of gases surrounding the Earth or any other planet. Greenhouse gases – any gases that trap the Sun’s warmth in the atmosphere. Nitrous oxide – another gas with no colour or smell; used to put people to sleep for medical reasons. finished