Climate Change

GLOBAL
WARMING
Presented By:
SHANIA
COTIANGCO

INTRODUCTION
Global warming is the
increase in the average
temperature of the
Earth's near-surface air
and oceans since the
mid-20th century and
its projected
continuation.
•Global surface temp -
erature increased 0.74
± 0.18 °C (1.33 ±
0.32) °F during the last
century.
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iamsuperielherrera@yahoo.com

What is Global Warming?
Global warming -- a
gradual increase in
planet-wide
temperature. Studies
indicate that the
average gloabal surface
temperature has. This
is the largest increase
in surface temperature
in the last 1,000 years
and scientists are
predicting an even
greater increase over
this century.

Factors that Causes Global
Warming:
oGreenhouse Gases
These greenhouse gases reabsorb heat reflected
from the Earth's surface, thus trapping the heat in
our atmosphere. This natural process is essential for
life on Earth because it plays an important role in
regulating the Earth's temperature.

THE GREENHOUSE EFFECT
Natural and Amplified Warming
oNatural Warming
The greenhouse effect is a natural warming
process. Carbon dioxide (CO2) and certain other
gases are always present in the atmosphere. These
gases create a warming effect that has some
similarity to the warming inside a greenhouse, hence
the name “greenhouse effect.’’

oAmplified Warming
Increasing the amount of greenhouse gases
intensifies the greenhouse effect. Higher
concentrations of CO2 and other greenhouse gases
trap more infrared energy in the atmosphere than
occurs naturally. The additional heat further warms
the atmosphere and Earth’s surface.

The primary cause of global warming is Carbon
Dioxide emissions. CO2 is being pumped into our
atmosphere at an insane pace; 8 billion tons of CO2
entered the air last year. Of course some of this is due
to natural activity such as volcanic eruptions and
people breathing.
What is the most significant
cause of global warming?

But the Earth is
equipped to easily
absorb those into the
normal regenerative
process. No, the
beginning of global
warming was caused by
fossil Currently in the
world 40% of all CO2
emissions are caused
by power plants. These
are burning coal, natural
gas and diesel fuel.
Some power plants burn
garbage.

Global warming as a chain
of events
•The first several of these
links is an over abundance of
solar radiation absorbing
gases and other particles
floating about in our
atmosphere.
•The next grouping of events
concerns what happens
when the small percentage
of increased heat on our
planet’s surface and in our
air begins to effect long
standing conditions.

Why are small temperature
changes a big deal?
The rise in temperature
around the Earth over the
last fifty years is only
around on-degree on
average. If we are just
raising the temperature a
little bit why does it
matter? Global warming
is melting the North and
South poles; it is creating
floods in some areas and
deserts in others.

While people can move from
one location to another if it
becomes too hot or cold, most
animals cannot. So creatures
such as Polar Bears are
threatened with extinction.
There are thousands of
animal and plant species put
at risk by global warming
Global warming is also believed to be responsible
for recent changes in our weather. There are more
hurricanes in the northern hemisphere every year
than ever before. And these hurricanes are more
powerful than the ones from 50 years ago. Rising
oceans, increased rainfall, loss of fresh water and
dozens of other problems are on the rise and the
cause is global warming.

Effects of Global Warming:
There are two major effects of global warming:
Increase of temperature on the earth by about 3°
to 5° C (5.4° to 9° Fahrenheit) by the year 2100.
Rise of sea levels by at least 25 meters (82 feet)
by the year 2100.

What is the solution? How do we stop
global warming?
Replace a regular incandescent
light bulb with a compact
fluorescent light bulb (cfl)
Install a programmable
thermostat
Move your thermostat down 2° in
winter and up 2° in summe
Clean or replace filters on your
furnace and air conditione
Choose energy efficient
appliances when making new
purchases
Five Major Ways to Help lessen the Harmful
Effects of Global Warming:

Photo Presentation
Effects:

[01]http//.:www.google.com/Wikipedia
[02]http//.:www.google.com/BBCenvironmentalnews
update
[03]http//.:www.nationalgeographic.com/GlobalWar
ming
[04]http//.:www.timemagazine.com/Glabalwarmingan
dwhatYoucando
[05]http//.:www.wwf.com/GlobalWarming
References:

Climate Change

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