Climate Change

1
Climate change

• The Everest of our problems

2
What is global warming?

• One of the biggest challenges that the
  environment is facing today is global warming. It
  is a natural phenomenon where the average
  temperature increases beyond the permissible
  limit. A warmer and earth disrupts the balance of
  the ecosystem and causes a negative impact on
  Nature. Frequent floods, droughts, heatwaves and
  storms take place.
• Global warming, meaning increase in the average
  temperature of the earths atmosphere and oceans,
  is one of the most serious challenges facing us
  today. A warmer earth may lead to changes in
  rainfall patterns, a rise in sea level owing to
  melting of glaciers, and a wide range of impacts
  on plants, wildlife, and humans. Frequent floods,
  droughts, heatwaves, hurricanes and tornadoes may
  upset the balance of the ecosystem. Crops and
  food supply may also be affected.

3
Introduction continued

• Global warming refers to the gradual, long-term
  increase in the average temperature of Earth's
  atmosphere. It is primarily caused by human
  activities, such as burning fossil fuels, which
  release greenhouse gases that trap heat from
  solar radiation. Global warming leads to climate
  change, affecting weather patterns, sea levels,
  and causing extreme events

4
What causes global warming?
It is caused by the greenhouse effect which
is the consequence of the accumulation of gases
like carbon dioxide, methane and nitrous oxide.
These harmful gases cover the earths atmosphere
like a blanket and prevent radiation of the sun
rays. This trapped heat increases the temperature
of the environment. Afforestation should be
encouraged to prevent the rise of global warming.
Solar and wind energy should also be used to
protect the earth.
5
Increase in earths average surface temperature
due to global warming
Due to global warming, the Earths average
surface temperature increased by approximately
0.6C during the 20th century. The mass of ice in
the north and south pole has started melting. The
source of the water of Ganges, the Gangotri
glacier is reported to have been melting at a
faster pace
6
Effects of global warming

• The water level of the seas and oceans have risen
  10-25 cm over the past 100 years. Sudden flood,
  irregular rainfall, earthquake and tsunami are
  sure indications that the temperature of the
  earth has been increasing alarmingly. Global
  warming also has a significant impact on
  ecosystems and biodiversity. Rising temperatures
  are forcing many species to migrate to new areas
  in search of suitable conditions. This not only
  results in the loss of habitats but also disrupts
  the whole ecological process.

7
How to control global warming?

• There are many effective global warming solutions
  which may reduce the effect of global warming if
  followed seriously by the people all over the
  world. We should reduce the emission of heat
  trapping green house gases released from various
  sources in order to reduce green house effect and
  thus global warming. We should reduce our
  dependency over technological and electricity
  needs. We should use energy efficiency
  technologies (less energy use), use greening
  transportation means more efficient mass
  transportation systems, promote the use of
  renewable means natural source of energy (solar,
  wind, geothermal, etc) and reduces our use of
  fossil fuels especially carbon-intensive coals to
  reduce climate change and thus global warming.

8
Prepared by Saanvi chaturvedi Class IX-F
ROLL NO. 5