CHANGE

HOW DOES THE WASTE OF ENERGY IS CHANGING?

Isabella Vallejo, Esteban Carvajal, Susana Cordoba and mariantonia 16/05/11

Synthesized information

By the years the use of energy has increased a lot due that the technology evolved. Before people used candles for light, rooms were warmed with chimneys and coal-burning stoves, food was cooled in ice boxes and houses were lightened with kerosene lamps. Since like now people uses lots of energy for working, making life easier, and living happy, the people needs more energy so it is growing.

Many years ago humans just had the power to create heat and light with fire, and it was just the beggining of the long path to make our lifes easier.

In CCB school the waste of energy is increasing due that there are more built areas and more objects that need energy. At school waste of energy is getting bigger every day due that at school there are more constructed areas and more equipment.

the waste of energy is changing because before on time there was no energy and with the time people invent new thing and one of those was the energy, the time start passing and the energy was starting to be modern but also the people start to use energy in a good way, after some years the people start to use even more the energy and know on time we don t use well the energy. Theres a big change between when the past and the future because in the past, people care more the energy but on this times people don t even care if they don t disconnect the charger.


 * Susana C, 25 may 2011 **


 * Receipt: **


 * In my house energy bills are saved. The last year we consume: **


 * Energy Consumption (Kilowatts) 2010 **
 * ** Jan ** || ** Feb ** || ** Mar ** || ** Apr ** || ** May ** || ** Jun ** || ** Jul ** || ** Aug ** || ** Sep ** || ** Oct ** || ** Nov ** || ** Dec ** ||
 * ** 418 ** || ** 463 ** || ** 446 ** || ** 435 ** || ** 477 ** || ** 465 ** || ** 437 ** || ** 484 ** || ** 465 ** || ** 494 ** || ** 500 ** || ** 601 ** ||


 * Energy Consumption (Kilowatts) 2011 **
 * ** Jan ** || ** Feb ** || ** Mar ** || ** Apr ** ||
 * ** 516 ** || ** 509 ** || ** 521 ** || ** 444 ** ||


 * As you can see each month of this year, energy consumption in my house has increased more than last year due to all the new technology we use: Computers, Mobile Phones, Cameras, etc. All this devices need to be charged so we are increasing the waste of energy. Also energy is wasted in the garden irrigation system. Many lights are needed at home but EVERY SINGLE BULB of my house in energy-efficient light bulb. Like my house have such a big lightening system if we didn´t have energy-efficient light bulbs the energy consumption would be HUGE. **

Esteban C, 24/05/11

Source: Interview

Andres Perez told us this changes the school had made about the energy (interview)

The CCB school change the lightening system, (he told us that they were changing the bulbs to save energy)

**Susana C, 25 may 2011**

**Source Internet:** @http://www.ecokids.ca/pub/eco_info/topics/energy/intro/index.cfm

**In ancient times people used wind to sail their ships and grind grain. A hundred year's ago falling water was used to make electricity. Over time we have learned to get energy from a number of different sources and use it in new and different ways.**
 * Energy has been used for heat and to cook food for thousands of years. Since the Stone Age, fire has been used to provide heat and light. **

Esteban C, 18/05/11

Source: Internet []

A BRIEF HISTORY OF ENERGY How our use of energy has changed over time

AN Y O N E W H O’S E V E R L I T A C A N D L E knows that making ﬁre is as easy as striking a match. But for our earliest ancestors, the ability to create a spark and build a fire must have been astonishing. The energy that it brought changed their lives. For the first time, they had the power to produce heat and light whenever and wherever needed. Creating fire was just the beginning of our ongoing quest to use Earth’s energy resources to make our lives better. OUR FIRST ENERGY SOURCES For most of the history of humankind wood was the mainstay of life — for shelter, for transportation on land and on water, and as a source of energy to burn for heat and light. Besides using wood and their own muscles, people took advantage of the energy that the sun, wind, running water, hot springs and even animals could provide — to do work, to travel, and for recreation. Ancient civilizations advanced the use of energy resources. Around 3,500 B.C. (about 5,500 years ago) Egyptians made the earliest known sailboats, harnessing the power of the wind to travel faster and further, while increasing trade with neighboring lands. By 500 B.C. Greeks were building what we now call “passive solar” homes to take better advantage of the sun’s light and warmth. And by 85 B.C. Romans were enjoying baths heated with water from geothermal hot springs. Around the same time, the Greeks made advances in use of running water. They developed waterwheels to grind grain, a task previously done by hand or with animal power. And by 640 A.D., in what is now Iran, the Persians had also found a new way to grind grain, using mills with large wooden blades to capture wind power. Europeans adopted the idea and used modified versions of these windmills throughout medieval times.

===

===

Source: Internet

 * @http://www.eia.doe.gov/kids/energy.cfm?page=electricity_home-basics **


 * Before electricity was available over 100 years ago, houses were light with kerosene lamps, food was cooled in iceboxes, and rooms were warmed by **
 *  wood-burning or coal-burning stoves. **

**Some important acts about energy were made by Benjamin Franklin, Thomas Edison, and Nikola Tesla.**
 * ** Benjamin Franklin demonstrated that lightning is electricity. **
 * ** Thomas Edison invented the first long-lasting incandescent light bulb. **


 * Earlier to 1879, direct current (DC) electricity had been used in arc lights for outdoor lighting. **
 * In the late 1800s, Nikola Tesla used the generation, transmission, and use of alternating current (AC) electricity, which lower the price of transmitting electricity over long distances. **


 * Tesla's inventions used electricity to bring indoor lighting to our homes and to power industrial machines. **


 * PRIOR KNOWLEDGE **


 * Change: It is getting worst because school its growing and more technology is need so the waste of energy is growing. **

12/05/2011 Isabella Vallejo: ** Like school is so big an have so many sections it needs lots of energy. **