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Its all about Global Warming/ Climate Change/ Green house effect.We have make it by the help of slide share sites and other reliable sources.Thanks
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Presentation
WelCome To
Group Members
1. Mir Atikur Rahman 09106063
2. Nur Islam08306014
3. Faia Jahan 10106062
4. Md Hachnayen Ahmed10106063
Group Name: Extreme
Global Warming /Greenhouse Effect/Climate
Change
The terms “Greenhouse Effect”, “Climate Change”, and “Global Warming” are often used interchangeably, yet they really refer to three separate and distinct processes. In this presentation we will show how the world environment/ weather getting warmer.
Gases responsible for green house effect.Its effect and possible remedy.
Objectives
Firstly let’s look at how the earth atmosphere is heated.
The energy that heats the atmosphere comes from the Sun , which is the source of huge energy
The sun sends its solar radiation out into space and the earth intercepts only a small portion of it, about one part in two billion which is tremendous amount.
½ of that energy that reaches the earth's atmosphere is reflected back out into space and about ½ reaches the surface.
Once the sun's energy reaches the earth's surface, it is absorbed and the temperature of the earth’s surface increases.
Introduction
The ability of the earth's atmosphere to allow the passage of visible light, but absorb reradiated heat energy emitted from the earth's surface is known as the greenhouse effect.
Climate is the long-term average conditions of weather.
Global warming refers to a rise of a temperature of the surface of the earth.
Currently the total world’s population is approx. 6,973,738,433
Cont:
History about The EarthThe earth was formed
about 4.5 billion years ago.
At that time the earth contained about 1% oxygen pressure
The Plants were developed first about 2.7 billion years ago
The first animal was develop around 600 millions year ago
Earliest human was born about 4.1 million ago
The population was doubled from 3 billion to 6 billion from the year of 1959 to 1999
Slowly, the ability of the earth’s atmosphere to absorb heat from the surface has increased and, with it, the temperature of the atmosphere. This is known as global warming.
Global Warming
Increase in the amount of greenhouse gasses in the atmosphere attributed mainly to human activity. Which is caused an unbalanced in the process called the green house effect.
Burning fossil fuels Cutting down trees Burning forest Factories Pollulaion Coal Oil Natural Gases Rising Sea levels
Causes
Some Effects of Global Warming
Climate change refers to general shifts in climate, including temperature, precipitation, winds, and other factors.
Factors are sun’s output, changes in the earth’s orbit and tilt, and volcanic activity etc.
Climate Change
Major Causes of Climate ChangeHuman Causes Increase green house gasses(emulsion from
buning fossils fuels-oil, coal etc)Pollution, smog from factories.Deforestation Increasing Population (More people more
CO2)
Natural CausesThe arctic tundra and wetlands release
methene, a greenhouse gasEarth naturally has a cycle of climate change
that occurs every 40,000 yearsThe sun’s solar energy output is changing
and naturally increases Earth average temperature by about 1’C every century
Earth’s orbit and tilt alter in relation to the sun, which changes solar energy output.
Cont:
An average increase in temperature and during the last century
Melting of polar ice-polar bears and others animals are drowning
Migrating birds are forced to change their time and place of migration
Melting of glaciers will lead to higher sea level, which will cause floods and put many low elevation reginons at risk of disappearing under water
Longer summers can disrupt animal habitaion
Some Effects of Climate Change
New and widespread diseases because of warm climate
Damaged crops due to sudden climate change and floods
Average Precipitation increase around the world
More wildfiresDroughts, heat waves, extreme winter and
stroms, hurricanes, typhoons
Cont:
A glass building in which palnts are kept to protect then from cold weather is known as green house.
And the trapping of the sun’s warmth in the earth’s lowest atmosphere , because visible radiation from the sun passes through the atmosphere more radily
Green House Effect
Carbon Dioxide from Fossil fuel Combustion: (82%) Carbon Dioxide emitted from Cars, Trains.
Methane: (9%) methane, comes form landfills, coils, oil and gas operations and agriculture
Nitrous Oxide: (5%) Emitted from burning fossils fuels and through the use of certain fertilizers and industrial processes
Human Made gases: (2%) Released as byproducts of industrial processes and through leakage.
Where they come from
Rising concentration of greenhouse gases generally produce an increase in the average temperature of the Earth
Rising temperature may , in turn , produce changes in weather, sea levels and land use patterns, commonly referred to as “climate Change”
Effects of Green House Gases on Climeate
Many ways to stop Global warmingStop fossils fuelsStop factories
pollutionWhich will cause
lack of oxygenReduce WasteUse solar power
energy
Use clean coal and oil
Drive low emission and fuel efficiency vehicle
Plant trees
Sijnce stopping the burning of fossil fuels would have t great of a negative effect on our economy
We must investigate other forms dof energy that would be just as affordable as fossil fuels without the negative effects or harmful gasses that contribut to global warming. (Solar , Wind)
Conclusion
Thank You
Any Question?