Transcript PowerPoint Presentation - Global Warming Is A Fact

Global Warming Is A Fact
Are Humans Causing Global
Warming?
• Climate experts linked the average
increase in global temperatures since the
mid-20th century to manmade greenhouse
gases
• 11 of the last 12 years have ranked among
the warmest years ever recorded.
• Increases in carbon dioxide in ice cores
are higher than many thousands of years
ago.
• Extreme changes in the atmosphere have
occurred in the last several decades which
is around the same time we started using
Green House Effect
The earths atmosphere is supposed to be
thick enough to keep enough heat rays
out so we don’t get to hot
 Thin enough to let some through so we
don’t get to cold.
 We are putting gases in the atmosphere
which is making it thicker.
 This keeps the heat rays in and causes
global warming.

What We Effect On This Earth
Melted Glaciers have given polar bears
and other arctic animals less places to
hunt and raise young.
 Insects have increased in new areas which
causes the spread of disease through bugs
like mosquitoes
 Places like Africa who are at or above the
crop tolerance temperatures are predicted
to get worse.
 Cities near the shore will be erased due to
rising sea levels.
 Warmer waters lead to bigger hurricanes.

Before and After
 Argentina’s
Upsala Glacier was once
the biggest in South America but
now it melts at a rate of 200 meters
 Mountains have lost snow at a more
rapid rate.
 The Pasterze, Austria’s longest
glacier is now completely
Grossglockner High Road
Future Effects Of Global Warming
 Hurricanes
will get worse and
hurricanes like Katrina will be
common on the coastal areas.
 In the next century the sea level is
predicted to rise between 9 and
88cm.
 The global temperature would
increase by 2.5 to 10 degrees F.
Is It Too Late?
 Some
things are too late to change
such as the heat which is predicted
to rise about 3 to 6 degrees in 30
years.
 We can still slow things down by
starting as soon as possible.
 Our attempts to stop global warming
won’t be felt until many years later
We are warming
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Ever since we started recording the earth’s
temperature, within the last 100 years the
temperature has risen 0.5 degrees Fahrenheit.
While just within the last 20 years the earth’s
temperature has risen 0.6 degrees Fahrenheit.
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What scientist have said the cause for this
warming is the continuous amount of Co2 that
is being put into the air.
And since about 1736, the time of the Industrial
Revolution, is when the amount of Co2 going
into the atmosphere increased.
Co2’s affect on us
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Co2 is a greenhouse gas that takes in and
absorbs and traps heat and other types of
radiation that comes from the sun.
With all of the heat and other radiation not
being able to escape the global. Gradually it will
warm up the earth.
Continued
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Other then being a gas that traps heat, Co2 also acts as
a trigger to start the effects of other kinds of gases.
One for example is water vapor.
With Co2 heating up the atmosphere, it wants to take in
moisture from the earth. And with that lost of moisture
forces the earth to warm up even more to take back in
more moisture.
So now with the warmer climates, the water vapor
creates clouds that are higher in the air that are thinner,
trap heat, and reflect more heat back to the earth.
Effects to the poles
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Another reason to confirm that we are warming is that
of the effects of the North and South pole.
This is because Co2, when accumulating heat, and
other light waves tend to be more effective at lower
temperatures. And high into the atmosphere.
So with Co2 being at its greatest collecting heat at lower
temperatures, it does things like for one melt the ice.
And the amount of thick ice that has been declined
about 14%. So on average, the ice is decreasing 0.7% a
year.
Effect of the poles continued…
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With the amount of ice being melted, and the
ice being white, there is nothing to reflect the
sun’s light back into the sky.
Also with there being a lack of ice to reflect the
light, the rays are able to heat up the
surrounding water effecting everything there.
One thing that this effects is the wild life that
lives there. One for example is the polar bear.
Continued…..
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With the polar bear they travel from different
patches of ice everyday to find food. But some
have to swim father then others, and rest on the
sea ice.
But with the ice thinning they have nothing to
rest on, or find food, and usually end up
drowning from swimming around.
Melted polar caps
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The northern ice cap is ice floating on water. If
it melt completely the biggest change will be the
salt content of the surrounding water, it will not
change the sea level, as it is sitting on the water
already it would displace the same amount of
water it contains as ice. It will affect the wildlife
that lives on the polar ice cap like polar bears,
and seals, but will not affect us to any great
extent.
Things That We Humans Should Do
Instead Of Not Doing
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Climate is influenced by many factors, both
natural and humans. Things that increase the
temperature of the world are trapping heat and
other gases from the automobiles.
• Power Plants helps increase in the amount
of radiation, the sun emits are examples
of positive forcing, some what of a heat
change and in deification of humans.
• We think as humans we live in this world
where if something is happening to it then
it’s our fault.
• Effects from Global Warming has hurt our
global peace in many ways with others.
One thing is storm strength lending to
extreme weather.
• It is us humans that created power plants
and other machines that releases carbon
dioxide and other harmful pollutants into
the world.
• If there was any results to Global warming
it would be sky high on damage to the
world. Saving many objects and keeping
limited pollution going up into the air and
causing dangerous chemicals should be
restricted.
• Our climates is meant to change on it’s
own. Not with the help of us taking the
world for granted. There are many places
such as Antarctica, Alaska and many other
colder climates that are warming up.
• There has been many incidents about the
world coming to an end but with people
smoking, not recycling, or planting any
trees and other helpful duties we will
come to an end.
• The president of the united states is not
helping at all, he tried to ask a country
that doesn’t like America for more gasoline
their response was no. It has came to our
attention that Bush is not trying hard
enough to save our environment.
• So we as a group should join in hands to
help our world instead of continually
fighting.
• Has it ever occur to anybody that if you
look at the temperatures from 2000 the
temperature has raised dramatically.
• Icebergs and icy climates has been
melting to its extreme advantage knowing
this we humans still use gases and other
hot chemicals.
• There are many animals that are dyeing
because their colder climates are getting
to warm for them to stand.
• We humans also add extra gases, power
plants, paper, cars that takes more gas
then needed, Gasoline spills, Fires from
cigarettes, and those cigarette smokers
that’s something they can help stop doing.
Global Warming Is Caused By
Humans
• Global Warming is going to continue
coming because as hot as it is getting
today it shows mountains fallings and
icebergs melting and even major city
islands sinking.
• We’ve been in records about how hot it
has gotten but it has never gotten this
hot. If gases and pollution keeps elevating
it’ll show many coastal states and country
disappearing.
• It is also said that the core of the earth is
widening. We believe that it is from us
humans using all of those chemicals that
doesn’t need to be used.
• We believe that if people were to help out
and stop causing carbon dioxide in the
world it may not cause a massive
distruction.
• Carbon Dioxide can cause major
destruction to the world and as us
humans. It’s hard enough that when we
breathe out we are breathing out carbon
dioxide and we are taking oxygen as we
breathe in.
• Planting trees and other oxygen givers can
help us and saving paper would also help
too. Keeping the earth safe and clean
would help us humans.
• Recycling plastic and other goods actually
helps too. Without any help from others
the world will be in the same situation for
years to come.
• We believe that humans are causing
Global Warming not helping and abusing
the earth. Not helping the world exist.
► Human
activity has been increasing the
concentration of greenhouse gases in the
atmosphere ( mostly carbon dioxide from
combustion of coal, oil, and gas.
► Parts
of Canada, Alaska, Siberia, and the
Antarctic have been experiencing warming
well above the global average for the past
few decades.
► Warmer
temperatures allow mosquitoes that
transmit diseases such as maleria to extend
their ranges and increase both their biting
rate and their ability to infect humans.
► Spring
now arrives earlier in many parts of
the world. Evidence of this comes from
earlier dates for plant blooming and leafing
and earlier animal egg laying. An earlier
spring may disrupt animal migration and
alter competitive balances among species.
► Plants
and animals generally react to
consistently warmer temperatures by
moving to higher latitudes and elevations.
Recent studies reveal that some species
already have started to shift their ranges
consistent with warming trends. Many
populations may become more vulnerable to
declining numbers or extinction if warming
occurs faster than they can respond.
►A
warmer climate will bring an increase in
precipitation world wide especially during
winter and in mid to high latitudes. In
addition more precipitation is expected to
fall in downpours and heavy snowstorms
leading to increased flooding human in land
use.
► As
the climate heats up droughts are
expected to become more frequent and
severe in some locations. Sustained drought
makes wild fires more likely , and crops and
trees more vulnerable to pest infestations
and diseases.
In the
20th
century,
the last
two
decades
have
been
the
hottest
on
record
Some Facts of Global
Warming
Global
warming
causes
some
areas to
heat up
and other
areas to
cool
down.
Global Warming Myths
Global warming will no
longer be a big problem
as the Ozone layer
shrinks.
Global warming and the
excess CO2 in the air will
benefit us, because they
reduce cold-related
deaths and help crop
growth.
A Few Concerns of Global
Warming
That America makes up 25% of the
CO2 pollutants, which is more than
China, India and Japan together.
How can the pollutants be cut to
prevent Global Warming
A Global Good-Bye
Goodbye
Goodbye
Goodbye
Goodbye
Goodbye
Goodbye
Baseball (No Ash tree)
Fly Fishing (No Rainbow Trout)
Polar Bears (Habitat melting)
Gray Whales (Water temp rising)
Penguins (Warmer waters)
Walrus (Pup abandonment)
The media most extreme effects of
GLOBAL WARMING
5th deadliest- Spread of disease
4th deadliest- More hurricanes and
warmer water temperatures
3rd deadliest- Increased chance of
intense droughts and heat waves
2nd deadliest- Many economic
consequences
1st deadliest- Melting of the Polar
Ice Caps
More effects of Global Warming
Sea levels will rise to new heights
Precipitation increase worldwide
Ice melting at the earths poles
Large glaciers melting around the
world
The scientist theories
Warming could lead to the increased
drought frequency, that the West
experienced over the last 30 years. Also
1999-2002 was record for one of the
worst drought periods
Continued theories
National annual precipitation has
increased between 5 and 10 percent
since the early 20th century.
The IPCC reports that intense rain
events have increased in frequency
during the last 50 years
Health Concern theories
A large portion of North America
experienced a severe heat wave in July
2006, which contributed to the deaths of
at least 225 people.
Also Studies have found that a high level
of carbon dioxide had an increase in the
growth of weeds, whose pollen triggers
allergies and asthma.
Scientific theories that are present
According to NASA, the Polar ice cap
is melting
at
an
alarming
rate
of
nine
•
percent per decade. And the Arctic
ice thickness has decreased 40
percent since the 1960s