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Best Presentation on Global Warming for Students.....

Best Presentation on Global Warming for Students.....

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Global warming presentation Global warming presentation Presentation Transcript

  • What Is Global Warming? Global warming is the warming of the earth through carbon dioxide (CO2) being pumped into the atmosphere from tailpipes and smokestacks. Then the gases trap heat like the glass in a greenhouse. This is where the term the “greenhouse effect” came from. Or we can say that Global Warming is the theory that we as humans are increasing greenhouse gases (the thick layer of gases that catches the sun’s rays and heats the earth) through industrialization causing more gases and increasing the amount of sunlight that gets caught and heats the Earth. Carbon dioxide is the most common gas that causes global warming.
  • What’s HappeningScientists say that the barrierinsulating the continental ice capsis melting. The scientists viewpointis that global warming andpollution from CO2 emissions areadding to greenhouse gases sosignificantly that the Earth iswarming up and will continue towarm. “The impacts of warmingtemperatures in Antarctica arelikely to occur first in the northernsections of the continent, wheresummer temperatures approach themelting point of water, 32 degreesF (0 degrees C).”
  • What’s HappeningAs the ice melts, big chunks ofglaciers will break off and becomelike ice cubes in a big glass of water.The ice chunks, known as icebergs,create mass in the ocean. Theicebergs displace the water causingthe ocean level to rise. Some of theshoreline in many places like Florida(where the land is at a low altitude)will go under water. This meltingcould increase the oceans height byup to 2 feet in only one century!This would mean many heavilypopulated costal cities would floodcausing millions maybe billions ofdollars and damage and the potentialloss of life in these cities.
  • What Will Happen  “Rising global temperatures are expected to raise sea level, and change precipitation and other local climate conditions. Changing regional climate could alter forests, crop yields, and water supplies. It could also affect human health, animals, and many types of ecosystems. Deserts may expand into existing rangelands, and features of some of our national parks may be permanently altered.” Global surface temperature increased 0.74 0.18 C during the last century.  As global temperatures increase, the climate changes. Deaths from global warming will double in just 25 years, to 300,000 people a year.  Global sea levels could rise by more than 20 feet with the loss of shelf ice in Greenland and Antarctica, devastating costal areas worldwide.  Heat waves will be more frequent and intense.  Droughts and wildfires will occur more often.  The Arctic Ocean could be ice free by 2050.  More than a million species could be driven to extinction by 2050.
  • Where Has It Been HappeningThe yellow represents warming, melting glaciers, This is where temperatures have risen in the world .Flooding & rising of sea level. The red represents thespread of disease, earlier springs, plant and animal shiftsand population changes, coral reef bleaching, downpours,heavy snowfalls, and flooding, droughts and fires.
  • How Long Has It Been Going On The reason the temperature has risen so much in the past 150 years is because of how much more we have used fossil fuels, which gives off carbon dioxide. “According to NOAA, the global warming rate in the last 25 years has risen to 3.6 degrees F per century, which tends to confirm the predictions of temperature increases made by international panels of climate scientists (IPCC).”
  • Explanation of the causes of global warming Greenhouse gases Pollution
  • Green House Effect The Earth receives energy from the Sun in the form UV, visible, and near IR radiation, most of which passes through the atmosphere without being absorbed. Of the total amount of energy available at the top of the atmosphere (TOA), about 50% is absorbed at the Earths surface. Due to this Temperature of the Earth is Increased. This effect is known as Greenhouse Effect. Greenhouse gases are transparent to shortwave but absorb longwave radiation. Greenhouse Gases Are - 1)Carbon Dioxide (CO2) 2)Methane (CH4) 3)Nitrous oxide (N2O)
  • Pollution Two Main reasons of pollution causing global warming.1)Carbon dioxide emissions from fossil fuelburning power plants :-Our ever increasing addiction to electricity from coal burningpower plants releases enormous amounts of carbon dioxideinto the atmosphere. 40% of CO2 emissions come fromelectricity production, and burning coal accounts for 93% ofemissions from the electric utility industry every day.2)Carbon dioxide emissions from burning gasolinefor transportation:-Our modern car culture and appetite for globally sourcedgoods is responsible for about 33% of emissions in the India.With our population growing at an alarming rate, the demandfor more cars and consumer goods means that we areincreasing the use of fossil fuels for transportation andmanufacturing. Our consumption is outpacing ourdiscoveries of ways to mitigate the effects, with no end insight to our massive consumer culture.
  • How To Control Global Warming ?We need to control global warming to reduce the future risk.Global warming is the increase in the average temperature ofthe Earth’s near-surface air and oceans in recent decades andits projected continuation. Global warming is a very seriousissue. The future would be very terrible if we don’t take anyaction to reduce it right away.  Use Public Transport.  Use Renewable Energy Like Wind Power.  Burn Methane.  Use Smart Cooler, Heater & Air Conditioner. Tune up and maintain vehicles properly.  Clean the air in your house.  Reduce electricity usage to the maximum.  Prefer recycling. & Go Green...