A presentation on global warming.

1. The drought of 2011
By: John Branham

2. What exactly is global warming?
Global warming is basically an increase temperature due to the greenhouse
effect which happens because pollutants. This is what google had to say “A
gradual increase in the overall temperature of the earth's atmosphere generally
attributed to the greenhouse effect caused by increased levels of carbon
dioxide, chlorofluorocarbons, and other pollutants.”. But really we need to dig
deeper then just what it is but more so why is it happening and what are its
effects.

3. What is global warming continued
Whether you believe it or not its happening. The earth is in fact gradually heating up. The reason mostly
behind the global warming is solar rays coming into the atmosphere. These solar rays are then reflected as
infrared rays which then become trapped in the atmosphere by pollution. The effects of this are mostly
and most obviously drought. Ill talk more about that in the next slide. Here is a chart of this happening:

4. How global warming is related to drought
Now lets start with the drought of 2011. Its not just a coincidence that the
drought occurred at the same time either. Its because of global warming of
course. Now global warming has gotten worse then ever. If we don’t stop it
now it could cause drastic problems for generations to come. While this topic is
present lets talk about anomalies. An anomaly is the difference between the
short-term average temperature and the long-term average temperature. Here is
a chart showing this:.

5. The chart

6. If you are questioning global warming…

7. How we know global warming is occurring
• The most alarming evidence of global warming in action is closely
scrutinized data that shows a relatively rapid and widespread increase in
temperature during the past 10 years. These were occurring during 1997-
2008, according to NASA's Goddard Institute for Space Studies.
• The rising temperatures monitored since 1978 are particularly noteworthy
because the rate of increase is so high and because, during the same time
period, the energy reaching the Earth from the Sun had been measured
perfectly enough to conclude that Earth's warming was not due to changes in
the Sun.

8. How this affects us
Based on what we have established already global warming in no doubt in effect. Its
not just some seasonal weather pattern. Based on this we can assume places such as
Texas and The Great Plains should be expecting some higher temperatures in the
future. Also this isn’t looking good for the future either because after a while global
warming will start to change ocean temperatures for the worse. Once these ocean
temperatures rise there is no turning back due to the amount of thermal capacity water
has. This means once water is at a certain temperature it is hard to change it to that
temperature or change it back from that temperature. This means in a long time with
global warming nothing will survive unless humans, animals, and plants are able to
adapt to these high temperatures.

9. How can we prevent global warming?
So lets think for a second what do you think of when you hear pollution?
Probably carbon-dioxide correct? By that assumption you would be partially
correct because it is the majority for the fact the earth is rising in temperature.
The only problem with that assumption is its not just carbon dioxide but many
other reasons. Global warming can be stopped though. We can stop it in its
foot tracks or at least slow it by a drastic amount by doing the following.

10. Cars
Get an electric car or maybe a hybrid for your next family car. The reason being
is instead of a combustion engine they use electricity to power a motor that
drives the car. Now I know your going to say “well don’t electric cars run off
of electricity which means that they are being powered by fossil fuels”. Sorry
but that’s not correct because a lot of electric energy can be produced by
windmills, dams, and other natural power producing devices like solar panels.
That will also lead me to my next slide. Another misconception is that an
electric car will look like this:

12. Cars continued
But some electric cars actually look like this:

14. Electricity
Now I know you’ve probably heard this a million times but when your not
using that one lamp by the couch turn it off. Or if your not using your Xbox or
PS4 turn it off. Because when you leave those on it uses electricity. So where
does electricity come from then? Electricity comes from power plants. How do
these power plants produce electricity? They burn fossil fuel. What happens
when they burn fossil fuel? Pollution of the atmosphere due to carbon dioxide
and other gasses.

15. Summary
So global warming is caused by solar rays being reflected from earth and the
rays get trapped heating up the earth. This global warming can cause drought.
This can also be a problem for future generations so we need to address the
problem now. There is no doubt that global warming is happening and it is
effecting us. We can prevent global warming by being more conservant with
electricity and not having a car/cars that create a large amount of emissions.
That is all and I/we will answer any questions after the presentation. Thanks
and have a great day!