Global Warming


Published on

This is a file me and my friend made. It took a lot of time to make, selecting great information. This was basically for exam revision and to impress our Geography teacher with fancy words and phrases. Hope you like it!!! :)

Published in: Education
  • Be the first to comment

  • Be the first to like this

No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide

Global Warming

  1. 1. GLOBAL WARMINGWhat is Global Warming?Global warming is the rise in the average temperature of Earth. Since the early 20th century, Earths meansurface temperature has increased by about 0.8 °C. It is primarily caused by increasing concentrations ofgreenhouse gases (such as carbon dioxide) produced by human activities such as the burning of fossil fuels anddeforestation. The sunlight enters the Earth’s atmosphere and warms up the planetary surface. After absorbing some heat from the sun, the earth reflects the rest back. But due to the high concentration of greenhouse gases present in the atmosphere, more heat is trapped, thus warming up the Earth faster.What are the causes of Global Warming?The environmental crisis is no longer a danger still in the womb of time. It is already at our door. The people who feelconcerned about the crisis ahead are ever growing in numbers. Humanity has always paid a price for development, and itwill continue to pay it. The environmental crisis that looms large today is nothing but the price of progress.The natural balance of greenhouse gases has been ruined in the last two hundred years .The greenhouse effectis a natural process that has kept living things alive for billions of years by heating the Earth enough for survival. But, the greenhouse effect has sped up due to more greenhouse gases being released into the air, thusheating up the Earth faster.  The gas responsible for the most warming is carbon dioxide (CO2). The amount of carbon dioxide that we release is far more than the amount nature can manage through the carbon cycle.  Due the Industrial the invention of machines that made manufacturing possible and the increase of mechanized transportation have greatly increased fuel consumption, thus leading to Global Warming. Increase in CO2 concentration has been one of the drawbacks of the Industrial Revolution.  Human activity such as the combustion of fossil fuels has interfered with the carbon cycle .Other contributors include methane released from landfills and agriculture (especially from the digestive systems of grazing animals), nitrous oxide from fertilizers and car exhausts, gases used for refrigeration and industrial processes. Countless number of vehicles running in the road today is one of the major sources of emission of alarge amount of carbon dioxide.  Another major cause of global warming is continuous cutting of a large number of trees across the world that is also referred as deforestation.  Increasing population is another cause of global warming that cannot be neglected.What are the impacts of Global Warming?The effects of Global Warming can be far – reaching and all – encompassing.  The effects of an increase in global temperature include a change in the amount and pattern of precipitation, as well a probable expansion of subtropical deserts.  Warming is expected to be strongest in the Arctic and would be associated with the continuing melting of glaciers and sea ice.  Other likely effects of the warming include a more frequent occurrence of extreme-weather events including heat waves, droughts and heavy rainfall, ocean acidification and species extinctions due to shifting temperature regimes.
  2. 2.  Effects significant to humans include the threat to food security from decreasing crop yields and the loss of habitat. Global warming also has an effect on the health of people. This includes starvation due to low production of food items, water borne diseases, vector borne diseases and allergens.  Global Warming also causes change in climate as summers become hotter and winters chillier.  Flash floods, bleached coral reefs, forest fires, snowfall in the Middle East, rising epidemics, dried up lakes and rivers and animals bereft of their homes are all the impacts of this great problem – Global Warming.  Climate change is already harming people and ecosystems. Its reality can be seen in melting glaciers, disintegrating polar ice, thawing permafrost, changing monsoon patterns, rising sea levels, changing ecosystems and fatal heat waves.What is climate?Climate refers to the long term weather patterns of a particular geographical location. Scientists have brokendown the world’s climates into five zones namely;  Tropical  Dry  Moderate  Continental  PolarWhat can be done to reduce Global Warming?At the country level- Action to be takenTo cut the amount of gases that industries make.Cut the amount of carbon dioxide thats released into the atmosphere by changing the way poweris produced too.To produce electricity using "greener" ways- Alternative Energy sources to be used Gas produced from rotting rubbish on landfill sites could be used Small scale and domestic solar stations are being developed.At personal level Recycle glass bottles, newspapers and magazines, tin cans, etc. Save them and take them to local recycling centres. Reuse plastic shopping bags and envelopes, avoid getting new ones Persuade you mum or dad to have a compost heap. Use paper on both sides: use cycles, have a PUC check in your car, have car pools, walk short distances, use public transport, etc. Don’t leave the TV or computer on standby. To reduce carbon emissions from cars Switch lights off when youre not in the room Keep your AC at 24˚C Use CFLs (Cathode Florescent Lamp)What is the condition of the environment due to global warming?
  3. 3. The natural environment encompasses all living and non-living things occurring naturally on Earth. It is anenvironment that encompasses the interaction of all living species.The Earth’s environment is in a sorry state. Carbon dioxide is one of the gases that has turned earth’senvironment over with its disastrous effects on the natural world. Gases that include nitrous oxide, watervapour, etc. have put forth their harmful effects on the environment. Green patches in cities are disappearing.Forests are being cleared. Waste is being dumped indiscriminately. Water is becoming too toxic to drink. Weare surrounded by a concrete jungle rather than of a natural one. There is question over the survival of humansas we on the brink of self-created disaster.Name the agencies that help to protect the environmentAgencies that help to protect the environment are UN, WWF, CMCA, TERI, Leo Club, Greenpeace, EnvironmentAgency (UK), etc.How do industries pollute the environment?VISUAL POLLUTION When factories shut down, land may be left derelict Mounds of waste and rubbish can poison landAIR POLLUTION Smoke from chimneys can affect human health by causing breathing problems Air pollution causes acid rain Gases in smoke cause acid rain which kills trees and fishSMELL POLLUTION Some industries give off very unpleasant smells
  4. 4. WATER POLLUTION Factories allow waste materials to escape into rivers Industries use water for cooling and return warm water to rivers which can kill water lifeNOISE POLLUTION Lorries going to and fro from the factories are noisy Heavy machinery creates noise for people living nearbyHow is industrial pollution being reduced?VISUAL POLLUTION IS BEING REDUCED Disused factories have been demolished Derelict wasteland is cleared, levelled and landscapedRIVER POLLUTION IS BEING REDUCED Rivers have been cleaned Many agencies have taken up tasks to protect rivers (Environment Agency in UK) Domestic sewage and industrial effluent is treated