Monday, March 28, 2011

A5. CAUSE & EFFECT

ALCOHOLISM - CAUSES AND EFFECTS

Alcoholism is the inability to control or ignore a strong craving for alcohol. People suffering from alcoholism often find that they need the aid of alcohol to feel good or normal. They often crave alcohol, but this craving is much stronger than the occasional craving people have for certain foods. The craving for alcohol experienced by those suffering from alcoholism is often so severe that the individual feels they need alcohol as if it were food or water. They do not feel they can go a day, or in some extreme cases, an hour, without consuming alcohol.
Alcoholism is not characterized by the type of alcohol consumed or how much alcohol is needed to satisfy the craving. Alcoholism is characterized mostly by the loss of control. Alcoholics often build up a tolerance to alcohol over time. This means they need more and more alcohol to satisfy their need for it. As they consume more and more alcohol, serious health problems manifest themselves. Alcoholism also affects the sufferer psychologically, as well as physically.
Alcoholism differs from alcohol abuse in that a person who abuses alcohol does not display a loss of control over their drinking. An individual who abuses alcohol may act irresponsibly while under the influence. They may also put themselves and others in danger by driving or operating machinery while drinking. Relationships may suffer, as with alcoholism and work performance may become careless. While alcohol abuse differs from alcoholism, it can be a serious problem and should not be ignored.
There are many symptoms of alcoholism. Many of the symptoms of alcohol abuse are also displayed by those suffering from alcoholism. Some symptoms include drinking alone or secretly (hiding the fact that they are drinking), memory loss (also known as "blacking out"), ritually drinking at certain times during the day and becoming irritable when this ritual is disturbed, feeling the need to drink to feel normal, loss of interest in relationships or activities that were once enjoyed, experiencing financial, marital, or legal problems caused by drinking, building a tolerance to alcohol or experiencing withdrawal symptoms if alcohol is not available. These symptoms are just a few of the possible symptoms that could be displayed by alcoholics.
Studies show that some individuals are more likely to experience alcoholism at some point in their lives than others. For example, genetics can play a role in whether or not a person is likely to be drawn to alcohol. Often the children of alcoholics will have a higher risk of one day becoming an alcoholic themselves. Psychological problems also increase the risk for alcoholism. Individuals suffering from depression, attention deficit disorder, bipolar disorder and many other psychological disorders often turn to alcohol to make them feel better or ease their suffering. This often turns into a dependency.
There are many health problems that are caused by alcoholism. Alcoholism depresses the central nervous system. Over time, alcoholism can cause fatigue, paralysis of the muscles surrounding the eyes and short-term memory loss. Other, more life-threatening health problems caused by alcoholism include cirrhosis of the liver, high blood pressure, heart failure, stroke, gastrointestinal problems, neurological disorders, sexual dysfunction and bone loss. Alcoholism also increases the risk of certain cancers, such as cancer of the esophagus, larynx, liver and colon. If left untreated, alcoholism can lead to death.
 
     
                                                               C/E Relationship 



 
 
 
 
 
 
 
 
 
 

A4. PROCCES

The Water Cycle
 


Each part of the cycle drives the other parts. Water is constantly being cycled between the atmosphere, the ocean and land. This cycling is a very important process that helps sustain life on Earth. 
 As the water evaporates, vapors rise and condense into clouds. The clouds move over the land, and precipitation falls in the form of rain, ice or snow. The water fills streams and rivers, and eventually flows back into the oceans where evaporation starts the process anew.  Learn a lot more about this complicated process in concepts.
 

Water's state (solid, liquid or gas) is determined mostly by temperature. Although water continuously changes states from solid to liquid to gas, the amount of water on Earth remains constant. There is as much water now as there was hundreds of millions of years ago.

Source: http://www.angelfire.com/nj/PflommScience/H20Cycle.htm


 Procces:


                               http://www.learnforestry.com/lessons/nfw/2009/images/water_cycle.gif

Saturday, March 26, 2011

A3. COMPARISON OR CONTRAST

How to Compare Photosynthesis to Cellular Respiration


Plants are unique in their function. They give off oxygen, which is required for all of us to live, both humans and most other animals. In order for plants to perform their important functions, certain processes are required. Two of these are photosynthesis and cellular respiration. While the two have characteristics in common, there are many differences between them.

Determine the order of these processes. Photosynthesis is a process by which plants use light from the sun to make food. After the photosynthesis happens, then the cells in the plant use cellular respiration to turn this food into energy that the plant can actually use. Photosynthesis happens before respiration can. 

Figure out where these activities take place. Both involve a type of organelle inside the cells, but photosynthesis takes place inside the chloroplasts, which contain chlorophyll. Cellular respiration takes place inside the mitochondria, which are the organelles that are able to break down glucose.

Look at where the energy used in both processes comes from. In photosynthesis, the energy that is used comes from sunlight, which is converted into energy. In cellular respiration, the energy is taken from glucose and then transferred to ATP, also known as adenosine triphosphate or derived energy, for the organism to use.

 Determine what part energy plays in both processes. Photosynthesis needs energy from the light in order to start the whole process. But in cellular respiration, energy is produced from the glucose that results in photosynthesis. In other words, photosynthesis needs energy to make glucose, while cellular respiration uses this glucose to actually create energy.


Look at the difference in scientific equations. Photosynthesis takes carbon dioxide from the air, water and sunlight to create sugar. After this happens, oxygen is released back into the air. Cellular respiration takes these same sugars and combines them with oxygen to release the energy as ATP. Carbon dioxide and water are released due to this.





Comparison Matrix 

                            

 

Saturday, March 19, 2011

A2. CLASSIFICATION

. Article:
 CLASSIFICATION OF ENERGY

All forms of energy are divided into two unique classifications, which deal with either motion or position. Energy of motion is commonly called kinetic energy. Potential energy is used to describe energy of position or molecular arrangement.
A body containing potential energy is primarily due to its position condition or chemical state. A rock sitting at the top of hill, or the weight on a cuckoo clock represents potential energy of position. Both are higher than their surroundings. A wound clock spring posses potential energy because it can supply the work necessary to make a clock operate for many hours. The potential energy of gas or fuel oil is used to heat a building. Burning a gas causes chemical energy to be released as heat energy.

Kinetic energy is based upon the movement of a particular body. Very body placed in motion does work and continues to do work until it reaches zero velocity. If an elastic band is stretched between two fingers, it represents potential energy. Releasing the band causes it to snap back to its normal position. Potential energy is changed immediately to kinetic energy as long as the bank is in motion. The work "kinetic" comes form a Greek work "Kineme" which means motion. This energy can be found in wind, water falling over a dam, an automobile rolling downhill, a moving motor shaft and electron flow in a conductor.
Potential and kinetic energy are also related to the form in which energy is found. The forms of energy includes:

  • Light energy
  • Heat or thermal energy
  • Mechanical Energy
  • Chemical energy
  • Nuclear Energy
  • Electrical Energy 

.Source: http://hubpages.com/hub/CLASSIFICATION-OF-ENERGY

. Graphic Organizer:

Friday, March 18, 2011

A.1 DEFINITION

.  Article:

   Radioactivity refers to the particles which are emitted from nuclei as a result of nuclear instability. Because the nucleus experiences the intense conflict between the two strongest forces in nature, it should not be surprising that there are many nuclear isotopes which are unstable and emit some kind of radiation. The most common types of radiation are called alpha, beta, and gamma radiation, but there are several other varieties of radioactive decay.


   Radioactive decay rates are normally stated in terms of their half-lives, and the half-life of a given nuclear species is related to its radiation risk. The different types of radioactivity lead to different decay paths which transmute the nuclei into other chemical elements. Examining the amounts of the decay products makes possible radioactive dating. Radiation from nuclear sources is distributed equally in all directions, obeying the inverse square law.

                                                                          

. Source:  http://hyperphysics.phy-astr.gsu.edu/hbase/nuclear/radact.html

. Indicate the definitions provided:

   The term being defined is the Radioactive, it happens when the nuclei emit particles as result of nuclear instability.


. Glossary:

_ Instability: a situation that keeps changing, so that you do not know what  might happen.
_ Isotopes: element have the same atomic number but different mass.
_ Decay: to be gradually destroyed as a result of a natural process.
_ Half-lives: its the time for half the radioactive nuclei in any sample to undergo radioactive decay.
_ Paths: a way from one place to another that people can walk along.
_ Obeying: to do law or rule says thet you must do.

Friday, March 11, 2011

WELCOME

 Welcome!! This blog is based in important concepts gave in ID112: They are: definition, classification, comparison/contrast, process, cause/effect, and summarizing. This blog has scientific and tecnological articles to apply them.