Science 9 topic..

1. Climate Change
is a change in the statistical distribution
of weather patterns when that change lasts
for an extended period of time. Climate
change may refer to a change in average
weather conditions, or in the time
variation of weather around longer-term
is a change in the statistical distribution
of weather patterns when that change lasts
for an extended period of time. Climate
change may refer to a change in average
weather conditions, or in the time
variation of weather around longer-term

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3. Is climate change real? Is
climate change man made
or just a natural
occurence? These are just
few questions that can be
asked as we talked about
climate change.
1

4. 2
Climate change is one of the most
current worldwide issues. Some
experts say that it is true that Earth
does go through a period of cooling
and a period of warming. The
increase of temperature that we are
experiencing right now is caused by
factors other than human activity.
Another point of view is that the
increase of Earth’s temperature is
brought about by human
intervention.

5. Whether the cause is man-made or not,
climate change is a change in the
environment. Global warming can bring
about a rising of sea level due to the
melting of ice caps and glaciers. We may
experience severe weather disturbances
such as much stronger typhoons and
heavier rainfalls. Some parts of the
world may experience El Niño or La Niña.
And most of all, it can cause extinction
of some fauna and flora.
3

6. W
H
AT
IS
GREENH
OUSE
EFFECT
?

7. Greenhouse effect
is a natural process that
warms the Earth's surface.
When the Sun's energy
reaches the Earth's
atmosphere, some of it is
reflected back to space and
the rest is absorbed and re-
radiated by greenhouse

9. Gases that contribute to
the greenhouse effect
include:

10. Water vapor. The most
abundant greenhouse gas, but
importantly, it acts as a
feedback to the climate.
•Carbon dioxide (CO2). A minor but very
important component of the atmosphere,
carbon dioxide is released through
natural processes such as respiration and
volcano eruptions and through human
activities such as deforestation, land use
changes, and burning fossil fuels.

11. •Methane. A hydrocarbon gas produced
both through natural sources and human
activities, including the decomposition of
wastes in landfills, agriculture, and
especially rice cultivation, as well as
ruminant digestion and manure management
associated with domestic livestock.
•Nitrous oxide. A powerful greenhouse
gas produced by soil cultivation
practices, especially the use of
commercial and organic fertilizers,
fossil fuel combustion, nitric acid
production, and biomass burning.

12. •Chlorofluorocarbons (CFCs).
Synthetic compounds entirely of
industrial origin used in a number
of applications, but now largely
regulated in production and
release to the atmosphere by
international agreement for
their ability to contribute to
destruction of the ozone layer.

14. Sea level rise
Global temperature rise
Republic of Maldives:
Vulnerable to sea level rise.

15. Warming Oceans
Shrinking ice sheets
Flowing meltwater from
the Greenland ice sheet

16. Glacial retreat
Extreme events
The disappearing snowcap of
Mount Kilimanjaro, from space.

17. Ocean acidification
Decreased snow cover

18. CAUSES OF CLIMATE
CHANGE
Two Categories :
 Those are due to natural
causes
 Those that are created by
man.

19. Natural causes

20. 1.Continental drift
2.Volcanoes
3.The earth's tilt
4.Ocean currents

21. Human
causes

22. 1.fossil fuels
2.Industrial Revolution
3.Consumerism
4.Greenhouse gases and
their sources

23. 5.How we all contribute
everyday

24. Effects of Climate Change

25. •Sea level is rising
•Arctic sea ice is
melting
•Glaciers and permafrost
are melting
•Sea surface temperatures
are warming.

26. •Temperatures of large lakes
are warming
•Heavier rainfall cause flooding
in many regions
•Extreme drought is
increasing•Crops are

27. •Ecosystems are changing
•Hurricanes have changed in
frequency and strength
Warmer temperatures
affect human health
Seawater is becoming
more acidic

28. That would be
all :)

30. Thank you
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