Reading+Log+1

** Good Job ** ** 2pts **** be careful with: Finding definitions, Finding referents ! ! **

__**Your job will be to read the article and answer the questions given

Reading Log 1 Read the following text and answer the following questions: **__

I. Pre-reading:

a. What do you know about the chaos theory?

I really don't know __nothin__g ** anything **about this theory. b. What do you think the text will be about?
 * good **

I believe that this text will be about The chaos theory and it's applications or uses ... I don't know... c. Write a list of five words (minimum) that you think you can find in the text you will read.
 * good **

- Theory - Chaos -Maths -Physics -science

Now click on the following link, then check your previous responses. Once you finish, please answer the questions below the picture []
 * Super **

Image taken on Sept 11th, 2008 from: []

__Chaos Theory, theory describing the complex and unpredictable motion or dynamics of systems that are sensitive to their initial conditions __** SIPI **. __Chaotic systems are mathematically deterministic—that is, they follow precise laws, but their irregular behavior can appear to be random to the casual observer__** DESCRIPTION **. Chaotic behavior is common in systems as varied as electric circuits, measles outbreaks, lasers, clashing gears, heart rhythms, electrical brain activity, circadian rhythms, fluids, animal populations, and chemical reactions. It is suspected that even economic systems, such as the stock exchange, may be chaotic. The field of chaos is evolving rapidly from a theoretical to an applied science.  The dynamic nature of the universe has led to a great deal of scientific research dedicated to analyzing change. Until recently, it was believed that if the dynamics of a system behaved unpredictably, it was due to random external influences. __Therefore, scientists concluded that if random influences could be eliminated, then the behavior of all such deterministic systems could be predicted indefinitely__. __It is now known that many systems __ ** general class word **__can exhibit long-term unpredictability even in the absence of random influences__** characteristics **__. Such systems are called chaotic. Even very simple systems, __ such as a pendulum, __exhibit chaos. __

__The unpredictability of chaotic systems arises due to their sensitivity to their initial conditions, such as their initial position and velocity__. Two identical chaotic systems set in motion with slightly different initial conditions can quickly exhibit motions that are quite different. French mathematician Henri Poincaré concluded that __he could not prove the__ solar system __to be completely predictable__. He was the first to state the defining feature of what later became known as chaos: “__It may happen that small differences in the initial conditions produce very great ones in the final phenomena. A small error in the former will produce an enormous error in the latter . Prediction becomes impossible.…” __

The ramifications of Poincaré's discovery were not fully appreciated by most scientists until computers allowed them to easily model and visualize chaotic systems. Before then, however, pioneering scientists and engineers at the National Aeronautics and Space Administration used Poincaré's work to send people and satellites into orbit. Edward Lorenz, an American meteorologist, discovered in the early 1960s that a simplified computer model of the weather demonstrated extreme sensitivity to the initial measured state of the weather (//see// Meteorology). He demonstrated visually that there was structure in his chaotic weather model that, when plotted in three dimensions, fell onto a butterfly-shaped fractal set of points of a type now known as a strange attractor. __Lorenz rediscovered chaos and proved that long-range forecasting of the weather was impossible.__

By the early 1980s, experiments regularly showed that many physical and biological systems <span style="color: #000000; font-family: Arial,Helvetica,sans-serif;">behave chaotically. One of the first such systems to be discovered was the dripping water faucet. Under certain conditions, the timing between water drops from a leaking faucet demonstrates chaotic behavior, making the long-term prediction of the timing of drops impossible. According to recent evidence, Poincaré's observations concerning the unpredictability of the solar system appear to be correct. Observations and computer simulations of the irregular tumbling motion of Hyperion, a potato-shaped moon of Saturn, have provided the first conclusive proof that objects in the solar system can behave chaotically. Recent computer simulations have also shown that the orbit of __Pluto, the outermost planet of the solar system__** definition **__,__ is chaotic. Scientists are currently developing applications that use chaos. New chaos-aware control techniques are being used to stabilize lasers, manipulate chemical reactions, encode information, and change chaotic heart rhythms into healthy, regular heart rhythms.

<span style="color: #0000ff; font-family: 'Comic Sans MS',cursive;">II. Reading:

1. Read the text and check if you can find any of the words you wrote in your list (the one you wrote in the pre-reading, letter c.)

Yes, I found - Chaos theory, science, and Maths ( derived words )

__2. Underline all the definitions you find in the text.__

3. In the definitions: Mark the <span style="color: #ff00ff; font-family: 'Arial Black',Gadget,sans-serif;">term being defined, <span style="color: #0000ff; font-family: 'Arial Black',Gadget,sans-serif;">the general class words and the <span style="color: #27a074; font-family: 'Arial Black',Gadget,sans-serif;">characteristics of the terms.
 * careful here! ! **

4. Find the descriptions if any. The Chaos theory signification !!

5. Find what the following referents, underlined in the sentences below, refer to in the text. Be careful some items more contain more than one referent:

a. Chaos Theory, theory describing the complex and unpredictable motion or dynamics of systems <span style="color: #000000; font-family: Arial,Helvetica,sans-serif;"> <span style="color: #ee1111; font-family: 'Arial Black',Gadget,sans-serif;">__that__ are sensitive to __ **their initial conditions** __ That -> the complex and unpredictable motion or dynamics of systems Their initial conditions -> initial conditions of motion in dynamics of systems

b. Until recently,<span style="color: #e11919; font-family: 'Arial Black',Gadget,sans-serif;"> __it__ was believed that if the dynamics of a system behaved unpredictably, **__it__** was due to random external influences It -> The dynamic nature of the universe has led to a great deal of scientific research dedicated to analyzing change. it -> that if the dynamics of a system behaved unpredictable.

c. “<span style="color: #db1414; font-family: 'Arial Black',Gadget,sans-serif;">__It__ may happen that small differences in the initial conditions produce very great ones in the final phenomena. A small error in **the former** will produce an enormous error in **the latter**. Prediction becomes impossible.…” It -> important feature of chaos The latter: the ends conditions **
 * the former : in the initial conditions

d. The ramifications of Poincaré's discovery were not fully appreciated by most scientists until computers allowed **__them__** to easily model and visualize chaotic systems. them -> the most scientists in this time.

e. He demonstrated visually that there was structure in his chaotic weather model **that**, **when plotted** ... That -> structure in his chaotic weather model when plotted -> representation in three dimensions of this structure

6. What new aspects did you discover about the chaos theory?

This article is very interesting because it allow me learn about this theory and know other aspects, as the Chaos theory applies to ** many **dynamic__s__ systems changing ** its **end__s__ conditions, producing Chaos.

7. Is the chaos theory related to real life aspects? Explain Of course, The Chaos Theory can be applied to real life aspects, as the irregular bahavior of a dropper ( example in the text ), biochemical processes in the human body , aspects and socio-political relations ...