1. Global warming

3. Introduction
Is the world getting warmer?
If so , are the actions of mankind
to blame for earth’s temperature
increases?
What can be done about these
issues?

4. What is Global Warming?
• Rise in earth’s temperature
• Results from changes in the
natural environment
• Caused by too much carbon
dioxide

5. Reason of Global Warming
1. Green House Effect
2. Deforestation
3. Burning of fuels in vehicles
4. Industrial advancement
5. volcanic eruptions

6. The Greenhouse effect

7. Greenhouse effect
• Discovered by Joseph Fourier in 1824.
• Some solar radiation is reflected by earth and
atmosphere.
• Some radiations absorbed and re-emitted in
all directions by greenhouse gase molecules.
• The effect of this is to warm the earth’s
surface.
• Greenhouse gases :water vapour ,
carbondioxide , CFCs ,methane etc.

8. Deforestation
Timber of tree also
sequesters carbon.
Deforestation means
timber may be
used &converted
to co2.
Co2 is greenhouse
gas which caused
global warming.

9. Burning of fuels in vehicles

10. Burning of fuels in vehicles
• Most vehicles run on
petroleum ,fossil fuel
, which release Co2,
methane in
atmosphere which
contribute in global
warming.

11. Industrial advancement

12. Industrial advancement
• Factories needs coal ,petroleum etc for
power.
• Burning of these fuels releases CO₂ which
absorbs harmful radiations from sun
making it warm ,hence cause global
warming.
• Smoke produced by factories mixed with
air which is harmful for breathing.

13. Volcanic eruptions
• Eruptions contain dust
particles & sulphur
dioxide which stay in
atmosphere for years.
• Which block sunlight
from reaching surface
of earth making it cool.

15. Effects of Global Warming
1.Impact on people
2.Impact on animals
3.Impact on plants
4.Rise in sea levels
5.Impact on sea life
6.Change in weather condition

16. Impact on people
• Increased
temperature leads
to many diseases
like dengue fever ,
malaria , yellow
fever.
• It also leads to
dehydration &heat
stroke.

17. Impact on people
• Warmer weather
provides an ideal
breeding environment
for mosquitoes which
cause West Nile
diseases.

18. Impact on animals
• Global Warming can disrupt migration,
hibernation & reproductive cycles of
animals.
• Mental illness caused due to shortage of
foods.

20. Impact on plants
• Change in rainfall &
temperature effect the
growth of crops.
• Leading to food
shortage & famine.

21. Rising in sea level
• Melting of ice cap
• Decrease in land area
• Arable farmland
destroyed
• People move from
coastal area to higher
ground.

22. Impact on sea life
• Sea plants like
phytoplankton, algae
which serve food , O2
to marine are extinct
rapidly.
• Warming of oceans
also lead to migration
of sea animals .

23. CHANGE IN WEATHER
CONDITION
->Drought:(Absence of Rain)
-Water evaporate faster
-Hunger & famine
-Wildfires
-Migration of people ,
animals

24. CHANGE IN WEATHER CONDITION
->Floods :
-Due to more water
evaporate in the
atmosphere , too much
rainfall.
-It disrupt drainage system of
cities & villages and
sewage spills cause
hazards problems.
-It also disrupt drinking water
sources.

25. HOW TO HELP STOP GLOBAL
WARMING
->Buy use energy efficient products
->Plantation of Trees
->Use less heat & air conditioning
->Change light bulbs
->Drive less & drive smart
->Use 3R’s(Reuse,Reduce,Recycle)

26. MAINTAINANCE OF GLOBAL
WARMING : 3R’s
-> REDUCE :
(Reduce amount of Earth’s
resources that we are used)
- Reduce the waste created
by purchasing in bulk, buying
items with less packaging and
switching to reusable instead
of single-use items.
- Businesses can adopt
manufacturing methods that
require fewer resources and
generate less waste.

27. MAINTAIN OF GLOBAL
WARMING: 3R’s

28. MAINTAIN OF GLOBAL WARMING:
3R’s

31. THE END