1.
WELCOME TO OUR
PRESENTATION

2.
NAME ID NUMBAR
FAHIM IBNE FAYEZ 15162101365
HASHIBUR RAHMAN 15162101370
MAINUL ISLAM NIROB 15162101387
ALIMUL RAZIB 15162101385
NAHID HASAN 15162101603
ALAMIN SIKHDER 15162101374

3.
Greenhouse Effect & Global Warming

4.
Green House
Effect

5.
Greenhouse Effect
Greenhouse gases are those gases that contributes to the warming of the
Earth's atmosphere by reflecting radiation from the Earth's
surface. Greenhouse gases greatly affect the temperature of the Earth;
without them, Earth's surface would be about 33 °C (59 °F) colder than
at present. Greenhouse gases are those that can absorb and emit infrared
radiation. In order, the most abundant greenhouse gases in Earth's
atmosphere.

6.
Natural Greenhouse
• Earth is much colder than the sun, but it is
warmer than the space outside its
atmosphere. Earth's atmosphere is made
up of gases, and these gases allow some
solar radiation to reach the planet but also
absorb some of the heat radiating from the
planet, trapping it and radiating it back
downward to the surface. This cycle is
called the greenhouse effect, because it is
similar to the warming process inside a
glass-walled greenhouse.

7.
Artificial Green House
A greenhouse is a house made of glass. It has glass walls and a glass roof.
People grow tomatoes ,flowers and other plants in them. A greenhouse stays
warm inside, even during winter. Sunlight shines in and warms the plants
and air inside. But the heat is trapped by the glass and can't escape. So
during the daylight hours, it gets warmer and warmer inside a greenhouse,
and stays pretty warm at night too. Due to artificial greenhouse people can
grow plants in the off season too.
Artificial Green House

8.
Green House Gases
Burning of
Oil, Petrol
Engine
Industrialization
BurningofFossilFuel
CFC
NOX +Co2
NO+Co2
NOx + Co2
CFC
Much of it remains trapped in
the atmosphere by the
greenhouse gases, causing our
world to heat up
NH4

9.
Founder of Greenhouse Effect
• The greenhouse effect was discovered by
Joseph Fourier in 1824.
• First reliably experimented on
by John Tyndall in 1858.
• First reported quantitatively
by Svante Arrhenius in 1896.

10.
Greenhouse Effect, the capacity of certain gases in the atmosphere to trap
heat emitted from Earth’s surface, thereby insulating and warming the planet.
The greenhouse effect has warmed Earth for over 4 billion years. Now
scientists are growing increasingly concerned that human activities may be
modifying this natural process, with potentially dangerous consequences.

11.
Greenhouse Gases
Ozone Layer Depletion
Formation of clouds

12.
Greenhouse Gases
 Greenhouse gas is any gas that accumulates lower-energy
infrared radiation. These gases consist of:
• Water vapour
• Carbon dioxide
• Methane
• Troposphere ozone
• Nitrous oxide

13.
Greenhouse Gas Natural sources Man-made sources
Carbon Dioxide
Organic decay, Forest fires,
Volcanoes
Burning fossil fuels – car
and factory emissions,
electricity generation
Methane Wetlands, Organic decay,
Termites
Natural gas & oil
extraction, Biomass
Burning, Rice cultivation,
Cattle, Refuse landfills
Nitrous Oxide Forests, Grasslands,
Oceans, Soils, Soil
cultivation; Fertilizers
Biomass burning; Burning
of fossil fuels
Chlorofluorocarbons (CFCs) None Refrigerators; Aerosol
spray propellants; Cleaning
solvents

14.
Ozone Layer Depletion: A cause of increasing
• Ozone depletion describes two distinct but related phenomena observed
since the late 1970s: a steady decline of about 4% per decade in the total
volume of ozone in Earth's stratosphere (the ozone layer), and a much larger
springtime decrease in stratospheric ozone over Earth's polar regions. The
latter phenomenon is referred to as the ozone hole.

15.
Effects

16.
Effects On Sea Levels
• Rising temperatures cause water of the oceans along with the sea to
increase
• Increasing temperatures melt ice as it starts to flow into the seas of
Antarctic and Greenland.
• sea levels rise by 20-40 cm causing floods in areas with low coast
areas e.g. Bangladesh and Netherland
• Flood in many areas case a danger for living things

17.
Effects on Farming
• changes in the weather affect the growing crops around the world
• Crops of wheat and rice grow well in high temperatures
• sugarcane and maize don’t survive in high temperature and end up
dying
• Furthermore change in the amount of rainfall affect the growth leading
to shortage of food
• South-Eastern part of the world will be affected as people will suffer
without food

18.
Effects on Water
• Countries all over the
world will be affected
• Britain and Southeast
will have a risk of droughts
• Africa won’t have enough water
Effects on Weather
• Increasing in Greenhouse
gases will change weather
around the world
• North-western countries have
an increase of temperature
• Summers and winters much
hotter

19.
Effects on
People and Animals
• Changes make it hard for humans to adjust and adapt to climate
• Avoiding all the disasters moving from one place to another will be
hard
• while weather and temperature changes, the homes of plants and
animals will be affected
• Moving ocean animals like seals will be hard
• New homes for animals may not be safe causing loss in animal
population

20.
Solutions to increasing Greenhouse effect
• Reduce the use of materials which produce greenhouse gases.
• Avoid the burning of fossil fuel and household residue.
• Upgrade infrastructures.
• Afforestation.
• Using alternative sources of energy.
• Using eco-friendly materials.
• Incineration plant should be established.
• Pollution should be controlled……

21.
Global Warming
The changes in the global
temperature, brought
about by the green house
effect which is induced
by enhanced greenhouse
gases into the air. This
can be termed as global
warming

22.
Causes of 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 Pollution
• Coal
• Oil
• Natural Gases
• Rising Sea levels

23.
CAUSES OF GLOBAL WARMING…..
Unmanaged
garbage
Pollution
Deforestation
Increasing
Automobiles
Industrialization

24.
Some Effects of Global Warming

25.
Consequences Of Global Warming
•Climate change
•Changes in wildlife
• Adaptations and cycles
•Increase in sea level
•On Health

26.
The Consequences of Global Warming
• More Powerful and Dangerous Hurricanes
Warmer water in the oceans pumps more energy into tropical
storms, making them stronger and potentially more
destructive.
• Drought and Wildfire
Warmer temperatures could increase the probability of
drought. Greater evaporation, particularly during summer and
fall, could exacerbate drought conditions and increase the risk
of wildfires.
• Intense Rainstorms
Warmer temperatures increase the energy of the climatic
system and can lead to heavier rainfall in some areas.
Scientists project that climate change will increase the
frequency of heavy rainstorms, putting many communities at
risk for devastation from floods

27.
Ecosystem Shifts and Species Die-Off
Increasing global temperatures are expected to disrupt ecosystems,
pushing to extinction those species that cannot adapt
Melting Glaciers, Early Ice Thaw
Rising global temperatures will speed
the melting of glaciers and ice caps and
cause early ice thaw on rivers and lakes

28.
Solutions