Save Electricity to Save the Environment!

May 7, 2013 By: Esme Edwards

Our electrical consumption has become

a big deal; right now our Earth is in a horrible state. We use electricity everyday for lights, heaters, air-conditioning, fans, fridges, and etc. but we don’t realize what we are doing to our Earth. Burning materials such as coal, oil, and gas create the electricity that we use. When we do this we release extremely harmful emissions into the Atmosphere. Lucky, it’s not all bad though because we can do something to stop this, by taking simple steps like turning off the light will help. In my home we attempted to take these steps one-step further by recording our result at the end

How do we save the environment? Well, you can take part and help by using a smaller amount of electricity every day. If we all make an effort we can make a difference!

The air-conditioning was set to a warmer temperature, 20 degrees Celsius. They were also put on a timer from 20:00 – 7:00 ensuring they would only be in use when needed. My family had to decide to also keep an eye on out fan too keeping them on the lowest speed, and set to be on for three hours and then turn off of another three hours. This cycle was helpful in that we barely used out fans. Alongside this we chose to turn off all our lights and computers once we had gone to bed so that they would be only on for 12 hours at the most every day. In addition we made restrictions on the period of time that we watched television. This meant that each member of my family was only allowed to watch three hours or less in a day. Although we made a plan and had discussed it we did slip up forgetting our new commitment to decrease our electrical consumption.

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Analysis of Electricity Usage

In the end my families’ data shows a tendency to have dropped giving it a negative slope and linear decay as you can see by the fitted line. This displays that my family was able to drop their electricity consumption.

In order to find the equation of my fitted line I had to find the slope. We already know is it negative because the graph represents linear decay but to find the exact slope I had to take two ordered pairs on my fitted line, (1, 3000) and (5, 2250). Next I subtract 3000 – 2250/ 1- 5 to get – 750/4. Once we have done this we have to place it in slope intercept form y = – 750/4 x + b. Our next step is to find b but because b is the y-intercept all we have to do is look at our graph and tell were the fitted line crossed the y-axis. In this case it is 3000 so the slope intercept equation for the fitted line would be y = – 750/4 x + 3000.

How long will it take for my family to only use 300 Kwh in a month? To help me answer this I have to us the slope intercept equation y = – 750/4 x + 3000. We have to substitute y for 300 and then from there work backwards. First subtract 3000 from each side of the equation to get -2700 = – 750/4 x next we have to multiply each side again but this time by the reciprocal of – 750/4 which is – 4/750. This will give you 14.4 = x so it would take me 14.4 months to lower my families monthly use of Kwh to 300Kwh.