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LIM HUAY YEE 8 MAY, 2013
THE EARTH CITY
Diminishing ElectricityA project to save the Earth
Over the course of the year, my
family and I have been savingelectricity. We do this because
electricity has a big impact onthe Earth. It is also one of
the
biggest carbon footprints that
can be made. Lesser
consumption of electricitymeans less fossil fuel wastage.
Scientists have predicted that
fossil fuels will run out by 2128.The usage of fossil fuels
also
causes global warming. Globalwarming leads to natural
disasters. This natural disasters
then will cause us problems
such as famine, loss of shelterand health related issues.
Do you know how much electricity your family
uses? What if the whole country uses the same
amount as you do? What is the impact? My family
started this project in August 2012, our actions were
not environmental friendly. However, with
reminders from each other and from notes stuckaround the house,
we learned to
turn off air conditioners when they werent needed, to
switch off the lights when we werent using them, to use
the washing machine and clothes dryer only when it was
full, to use fans instead of air conditioners. These were
some of the many steps we took to save electricity. Whatare you
going to do to save electricity?
My Familys Electricity Consumption Habits
8 MAY, 2013
3 STEPS TO SAVE ELECTRICITY
Awareness
Become aware that you are wasting
electricity. However, it is not the end of the
world, you can do something about it. Let
the fact change your lifestyle.
PlanSet a goal for yourself. How much
electricity do you want to save? Come up
with ideas to save electricity. What can you
do? What needs to be done?
ActAct on your plan. Make sure to keep to your
plan. However, if you come up with better
ways to save electricity, add it in.
Waste not the smallest thingcreated, for grains of sand make
mountains, and atomies infinity E. Knight
Continued on pg.2
7/30/2019 Yearlong Project 8 Redo
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Huay Yee 8 May, 2013
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Do you have your goal? If you
do, lets take it one step further.
Lets make a prediction to see
how long it would take you toreach your goal. My familys
goal is 300 KwH. First, we find
the equation of the fitted line.
The fitted line shows, the
electricity usage in my
household is decreasing steadily.
However, we must make sure
that this is true. In order to do
that, we have to find to points on
the line. The points I have
chosen is (0, 1125) and (7, 995).
Next, we subtract to get the
slope. We subtract in the manner
of rise/run. So we do, 995-1125=
-130 over 7-0=7. So we get -130/7
= -18.57. Now that we have our
slope, the next step is to make a
slope-intercept equation. The
slope-intercept equation is y=
mx+b. So substituting all we
have, we get y=-18.57x+b. We
have to now find b, theintercept. To find b, we
substitute x and y with one
ordered pair. I choose the
ordered pair (0, 1125). Now,
we substitute. 1125 = -18.57(0)
+b. Then we solve, -18.57(0)=0,
so 1125=b. Then we double
check with the other equation,
(7,995). 995=-18.57(7)+b, 995 =
-130 +b. Now, add 130 on both
sides. 995+130=1125. 1125=b. So
in conclusion, the slope-interceptform is y=-18.57x+1125.
*All data is rounded to fit equations. *
Our Goal is 300 KwH, How Long Will It Take?
The fitted lineshows, theelectricity usage in
my household isdecreasing steadily.
So to complete the process we now have to
substitute 300 for y. 300 = -18.57x+1125. Thenwe solve it.
Subtract 1125 from both sides. -825=-18.57x. Divide both sides by
-18.57.
44.43=x. It will take approximately 44 monthsefore it drops to
300 KwH, if we continue at
the same rate. If you simplify this, it means thatit will take
approximately 4 years before it
finally come down to 300 KwH if it continues atthis same
rate.
*All data is rounded to fit equations and make
information easier to understand. *
Final Prediction: How many months to get to 300 KwH?
. It will take approximately 44 monthsbefore it drops to 300
KwH, if we continue
at the same rate.
