Coal in a Nutshell

Coal in a Nutshell Coal is an enormously valuable fossil fuel that has been used for hundreds of years in industry. It is made up of organic components; specifically, plant matter that has been buried in an anoxic, or non-oxygenated, environment and compressed over millions of years.   Fossil, Mineral or Rock? Because it is organic, coal defies the normal standards of classification for rocks, minerals, and fossils:   A fossil is any evidence of life that has been preserved in rock. The plant remains that make up coal have been pressure cooked for millions of years. Therefore, it is not accurate to say that they have been preserved.  Minerals are inorganic, naturally-occurring solids. While coal is a naturally-occurring solid, it is composed of organic plant material.Rocks are, of course, made up of minerals.   Talk to a geologist, though, and theyll tell you that coal is an organic sedimentary rock. Even though it doesnt technically meet the criteria, it looks like a rock, feels like a rock and is found between sheets of (sedimentary) rock. So in this case, it is a rock.   Geology isnt like chemistry or physics with their steadfast and consistent rules. It is an Earth science; and like the Earth, geology is full of exceptions to the rule.   State legislators struggle with this topic as well: Utah and West Virginia list coal as their  official state rock  while Kentucky named coal its  state mineral  in 1998.   Coal: the Organic Rock Coal differs from every other kind of rock in that it is made of organic carbon: the actual remains, not just mineralized fossils, of dead plants. Today, the vast majority of dead plant matter is consumed by fire and decay, returning its carbon to the atmosphere as the gas carbon dioxide. In other words, it is oxidized. The carbon in coal, however, was preserved from oxidation and remains in a chemically reduced form, available for oxidation. Coal geologists study their subject the same way that other geologists study other rocks. But instead of talking about the minerals that make up the rock (because there are none, just bits of organic matter), coal geologists refer to the components of coal as  macerals. There are three groups of macerals:  inertinite, liptinite, and vitrinite. To oversimplify a complex subject, inertinite is generally derived from plant tissues, liptinite from pollen and resins, and vitrinite from humus or broken-down plant matter. Where Coal Formed The old saying in geology is that the present is the key to the past. Today, we can find plant matter being preserved in anoxic places: peat bogs like those of Ireland or wetlands like the Everglades of Florida. And sure enough, fossil leaves and wood are found in some coal beds. Therefore, geologists have long assumed that coal is a form of peat  created by the heat and pressure of deep burial. The geologic process of turning peat into coal is called coalification. Coal beds are much, much larger than peat bogs, some of them tens of meters in thickness, and they occur all over the world. This says that the ancient world must have had enormous and long-lived anoxic wetlands when the coal was being made.   Geologic History of Coal While coal has been reported in rocks as old as Proterozoic (possibly 2 billion years) and as young as Pliocene (2 million years old), the great majority of the worlds coal was laid down during the Carboniferous Period, a 60-million-year stretch (359-299 m.y.a.) when sea level was high and forests of tall ferns and cycads grew in gigantic tropical swamps. The key to preserving the forests dead matter was burying it. We can tell what happened from the rocks that enclose the coal beds: there are limestones and shales on top, laid down in shallow seas, and sandstones beneath laid down by river deltas. Obviously, the coal swamps were flooded by advances of the sea. This allowed shale and limestone to be deposited on top of them. The fossils in the shale and limestone change from shallow-water organisms to deep-water species, then back to shallow forms. Then sandstones appear as river deltas advance into the shallow seas and another coal bed is laid down on top. This cycle of rock types is called a cyclothem. Hundreds of cyclothems occur in the rock sequence of the Carboniferous. Only one cause can do that - a long series of ice ages raising and lowering the sea level. And sure enough, in the region that was at the south pole during that time, the rock record shows abundant evidence of glaciers. That set of circumstances has never recurred, and the coals of the Carboniferous (and the following Permian Period) are the undisputed champions of their type. It has been argued that about 300 million years ago, some fungus species evolved the ability to digest wood, and that was the end of the great age of coal, although younger coal beds do exist. A genome study in Science gave that theory more support in 2012. If the wood was immune to rot before 300 million years ago, then perhaps anoxic conditions were not always necessary. Grades of Coal Coal comes in three main types or grades. First, the swampy peat is squeezed and heated to form a brown, soft coal called lignite. In the process, the material releases hydrocarbons, which migrate away and eventually become petroleum. With more heat and pressure lignite releases more hydrocarbons and becomes the higher-grade bituminous coal. Bituminous coal is black, hard and usually dull to glossy in appearance. Still greater heat and pressure yields anthracite, the highest grade of coal. In the process, the coal releases methane or natural gas. Anthracite, a shiny, hard black stone, is nearly pure carbon and burns with great heat and little smoke.   If coal is subjected to still more heat and pressure, it becomes a metamorphic rock as the macerals finally crystallize into a true mineral, graphite. This slippery mineral still burns, but it is much more useful as a lubricant, an ingredient in pencils and other roles. Still more valuable is the fate of deeply buried carbon, which at conditions found in the mantle is transformed into a new crystalline form: diamond. However, coal probably oxidizes long before it can get into the mantle, so only Superman could perform that trick.

Frequently Asked Questions About Sexual Assault and Abuse

Frequently Asked Questions About Sexual Assault and Abuse Protecting your child from sexual assault or helping your child if they have been sexually abused can be traumatic and confusing. Many people share the same questions and concerns. Here are comments, frequently asked question, and feedback about the topic of child abuse and sexual assault. 11 Common Frequently Asked Questions About Sexual Assault I am afraid of scaring my children by talking to them about sexual abuse, but I am also afraid not to talk to them about it. What should I do? Answer: There are many things that we teach our children to be careful about or about how to react to different scary situations. For example, how to cross the street (looking both ways) and what to do in the case of a fire (drop and roll). Add the topic of sexual abuse to the other safety tips that you give to your children and remember, the subject is often more frightening to parents than to their children. I do not know how to tell if someone is a sex offender. Its not like they wear a sign around their neck. Is there any sure way to identify them? Answer:  There is no way to tell who is a sex offender, with the exception of offenders listed on sex offender registries online. Even then, the chances that would recognize the offenders in a public place is questionable. That is why it is important to trust your instincts, keep an open dialog with your children, stay aware of your surroundings and the people involved with your children, and follow general safety guidelines. People may falsely accuse someone of being a sex offender or of being sexually abused.  How do you know for sure what or who to believe? Answer:  According to research, the crime of sexual assault is no more falsely reported than other crimes. In fact, victims of sexual assault, especially children, will often hide that they have been victimized because of self-blame, guilt, shame or fear. If someone (an adult or child) tells you that they have been sexually abused or identifies the person that sexually abused them, it is best to believe them and offer your full support. Avoid interrogating them and allow them  to decide the details that they are comfortable sharing with you. Help guide them to the proper channels for finding help. How does a parent possibly handle knowing that their child was sexually assaulted? I am fearful that I would fall apart. Answer: A common fear with children who have been victimized, is how their parents will react when they find out what has happened. Children want to make their parents happy, not upset them. They may feel ashamed and fear that it will somehow alter how a parent feels about them or relates to them. That is why it is paramount that if you know or suspect that your child has been sexually assaulted that you remain in control, make them feel safe, nurture them and show them your love. You must be strong and remember that the trauma that your child has endured is the issue. Redirecting the focus away from them to you, by displaying out of control emotions, is not be helpful. Find a support team and counseling to help you deal with your emotions so that you can remain strong for your child. How can children ever recover from such an experience? Answer:  Children are resilient. It has been shown that children who can talk about their experience with someone that they trust, often heals more quickly than those that keep it inside or who are not believed. Offering full parental support and providing the child with professional care can help the child and family to heal. Is it true that some children willingly participate in sexual activities and are partly to blame for what happened? Answer: Children cannot legally consent to sexual activity, even if they say that it was consensual. It is important to remember that  sexual abusers use deviant ways to gain control over their victims. They are highly manipulative, and it is common for them to make victims feel that they are to blame for the assault. If the child feels that they somehow caused the sexual assault, they will be less likely to tell their parents about it. When dealing with a child that has been sexually assaulted, it is important to reassure them that nothing that was done to them by an adult was their fault, no matter what the abuser did or said to make them feel otherwise. There is so much about sex offenders on the news. How can parents avoid being overprotective with their children? Answer: It is important that children learn how to react to the possible dangers that they may be confronted with in life. By being overprotective or exhibiting irrational fear, children tend to become helpless. It is more productive to teach children common sense, provide them with the information that can help them, and keep an open and inviting dialog going so that they feel safe to talk about their problems. I am fearful that I will not know that my child has been a victim. How can a parent tell? Answer:   Unfortunately, some children never tell that they have been victims of sexual abuse. However, the more informed parents are about what to look for, the better the odds are that they will recognize that something has happened to their child. Learn to keep close tabs on your instincts and look for any change in your childs behavior that is concerning. Do not dismiss thoughts that something might be wrong.   Is the court process terribly traumatic for child victims? Are they forced to relive the abuse? Answer:  Ã‚  Children who go through the court process often feel that they had regained the control that was lost when they were sexually assaulted. The court process can become part of the healing process. In many states, there are professionally trained personnel and child-friendly places designed to help child victims through the interview process. If my child is a victim of sexual abuse, does talking to them about it afterward make it worse? Answer:  Ã‚  A child should not feel that they are being forced to talk about being sexually assaulted. Be careful that you are opening the door for them to talk, but not forcing them through the door. Most children will open up when they are ready. It will help them to get to that point by knowing that when that time comes, you will be there for them. What should I do if I suspect someone is sexually abusing my child or child in the neighborhood? Answer:  Ã‚  It is best to contact the authorities and let them investigate. If you suspect the abuse because of something your child or another child told you, your primary role is to believe the child and give them your support.

Combining and using source material Essay Example | Topics and Well Written Essays - 250 words

Combining and using source material - Essay Example e Cambridge Advanced Learner’s Dictionary (2003), and Longman Dictionary of Contemporary English (2004) define research as a learning of an object in order to get new data. Howard and Sharp (1983), in his â€Å"Doing Your Research Project†, and Wisker (2008), in his â€Å"The Postgraduate Research Handbook†, have a similar view but add that there must be methodological processes which can gain benefit for research. These fairly general definitions are further expanded by Nunan (1994), â€Å"Research Methods in Language Learning†, who argues that research must include three elements or components such as 1. a question, problem or hypothesis, 2. data, 3. analysis and interpretation of data. For Wisker what is key is that research has an effect on the world, which is in research results, and finds the realization in our behavior in society. Dawson(2002), however, gives a less general definition and focusses specifically on the purposeful examining of the cond uct of other people with the aim of better understanding them or adding new information to knowledge. For the purposes of this essay, the word â€Å"research† will be used to mean specific studying of an object with a particular aim and special

Racism in Finding Forrester Essay Example | Topics and Well Written Essays - 1000 words

Racism in Finding Forrester - Essay Example Finding Forrester" has elements of class, race, ethnicity and stereotyping and even gender inequality that are featured invariably in the various threads of the story as the director, Gus Van Sant would relate the 2000 movie. The film tries to reproduce what obtains in society in as close to reality as possible. Starting with sociological perspectives, this paper gives a synopsis of the film, progresses on to the story in selective perception mode and picks on incidents of the story featuring these sociological terms with an insight of what happened.In a gritty New York neighborhood, a shadowy but perpetually unseen figure appears behind thin curtains. Rumors abound regarding The Window's identity and story, prompting African-American Jamal Wallace to accept a dare to infiltrate The Window's apartment and bring something out. Jamal is a 16-year-old scholar-athlete and aspiring writer in inner-city Manhattan. When he's not writing in his journal in his bedroom, Jamal and his boys woul d play basketball on a local Bronx street court. They note that they're being observed by someone with binoculars in a nearby apartment building.As Jamal enters the apartment, he is caught in the act and accidentally leaves behind his backpack, which contains his journals. The Scottish reclusive genius writes comments in the notebooks, and drops the backpack through a window.Jamal returns for more lessons. His efforts lead him to get tutored by The Window, with Jamal agreeing not to reveal his whereabouts. The tutor turns out to be a Pulitzer Prize-winning classic novelist, William Forrester, who wrote "the Great 20th Century Novel," Avalon Landing, and had been reclusive for four decades. Forrester is a male Caucasian in his mid seventies. Sociological perspectives Blacks like Jamal are considered inferior by some theorists as a result of flawed genetic traits (Eitzen and Zinn 2004). In The Bell Curve work of Herrnstein and Murray (1994), Blacks are said to be mentally inferior to Whites. Such genetic inferiority, according to Gould (1994) cannot be changed by environmental changes. These theories bordering on biological deficiency, generally are not accepted in the scientific community (Eitzen and Zinn 2004). Media, however, just like films, continue to give attention to the thinking of these theorists. The Movie Race is a huge issue in the film and many stereotypes are made. Jamal Wallace is introduced in the film as a typical Black teenage male who goes to a low class school in the Bronx and really excels on the court as a basketball player. He is looked upon as an amazing Black as though unexpected because of his color. One proof of this is that the teacher (April Grace) calls Jamal's mother in to school, to inform her of her child's amazing abilities. Jamal is also looked at as given to playing or to pleasure because of his class. Although he had wanted to realize his writing ability, the exclusive New York school that had offered him a scholarship, is actually more interested in having Jamal play basketball to improve their school image. He soon learns that after losing several players to graduation, the school is looking to restock the basketball team. In fact, Jamal gets transferred there as a junior, presumably to have him educated. A Black, Jamal is seen to fit in their objectives as Blacks are of a class, easily pliable and more oriented to playing than studying. Or so the prep school thought. Jamal has been characterized also as an underachiever in class. This plot point caters to the stereotype that Black students get bad grades. This is different from the view that Jamal may want to get bad grades to fit in with his bad-grade-getting peers. This is probable and is more of peer pressure among the young which can be found in whatever race. The first view, however, which appears truer as far as the story is concerned, is stereotyping while the second view is non-racial. The first view which

Joy Luck Club - The Struggles of Life :: essays papers

Joy Luck Club - The Struggles of Life A giant total has been assessed onto an assignment. The team has spent weeks of preparation. In moments the presentation of this project will commence. But, some team members aren't ready. The whole project crumbles and ultimately results in a failure. Disciplined workers have no control over it, but they must overcome this obstacle. Only this way can they become better people and know how to handle similar situations in the future. People must overcome hardships to have stronger personalities, just like the women in Amy Tan's The Joy Luck Club. People learn from their mistakes. For Suyuan Woo, she over packed and failed to make it to a relief area. "After a while, she left the suitcases behind, keeping only the food and a few clothes. And later she also dropped the bags of wheat flour and rice^ ." (p. 324). After leaving all this, she continued, but she was already too fatigued to walk anymore. Her energy was burned up from her body, like fossil fuel from the Earth. Finally, too much was used. She learned that no one could ever take everything with them. They must make sacrifices to survive. An-mei Hsu survived a great hardship, like when hot soup scorched her young neck, leaving her with a scar. "I could not speak because of this terrible choking feeling. I could not see because of all the tears that poured out to wash away the pain." (p. 39). Her tender skin survived the intense heat, and her character developed. When she was older, another crisis erupted when her mother killed herself with opium. At this point, Wu-Tsing's house was nothing, only a hive of polygamy. From this, she learned that she could gain respect that her mother could never fully achieved. "And on that day, I showed Second Wife the fake pearl necklace she had given me and crushed it under my foot. And on that day, Second Wife's hair began to turn white. And on that day, I learned to shout." (p. 272). She resisted, and refused to succumb to the pressures in her life. Planned marriages were a common practice when the Joy Luck mothers were still young. For instance, when Lindo was 12, she was forced to marry into a very harsh family. From it, she learned patience. Soon, after her marriage, she longed to be free again. "On the morning of that day, I woke up Tyan-Yu and the entire house with my wailing. It took Huang Taitai a long time to come into my room.

The Symbol of the Mockingbird Lies at the Heart of Harper Lee’s Novel to Kill a Mockingbird. Discuss.

Mockingbird's are not only symbols of innocence; they are also symbols of happiness and to kill them is evil. This concept, the senseless persecution of an innocent individual, is central to Harper Lee's novel. Boo Radley and Tom Robinson are both mockingbird figures, innocent yet condemned through the prejudices of society. The symbol of the mockingbird, with its associated ideas of a fragile, albeit beautiful innocence appears when Atticus tells Jem and Scout they may shoot all the bluejays they want, â€Å"but remember it's a sin to kill a mockingbird†.This is the first time Scout has ever heard Atticus say it was a sin to do something. The full significance of this remark is explained to Scout by Miss Maudie as she explains that mockingbirds â€Å"do nothing but sing their hearts out for us†, making music for the enjoyment of everyone in Maycomb. They represent a type of gentle and harmless creature. Throughout the text, Lee reiterates that to kill a mockingbird wou ld be wicked and spiteful, a senseless and pointless act of destruction. Boo Radley symbolises a beautiful, but tortured mockingbird that is misunderstood and ostracised by both his family and the wider community.He is kept as a prisoner in his own home, kept in confinement by his god-fearing Baptist family. Despite this treatment Boo remains gentle and harmless. However, people tell stories about how he eats squirrels and cats and poisons the pecan nuts in the school yard. To the community Boo is a â€Å"malevolent phantom†. Gradually Scout and Jem begin to see things from Boo's perspective. Like the mockingbird Boo gives pleasure and comfort: for example, the gifts in the tree, the blanket placed around their shoulders as they watch Miss Maudie's home go up in flames.Finally, he saves Scout and Jem's lives. In turn, Scout realises to drag Boo into the limelight would be like â€Å"shootin' a mockingbird† and a cruel betrayal of all the inherent goodness Boo symbolise s as a mockingbird. The mockingbird symbol also involves the broader themes of justice and how it can destroy an innocent person. Tom Robinson is an honest and principled black man who is accused of raping a white girl, Mayella Ewell. He explains he was only in the Ewell's house to help her; however, he condemns himself in the eyes of the jury when he says he felt sorry for her.This would be seen as the lowest class of citizen showing superiority towards a class above. The white community's fear of racial disturbance and their insecurity about their own position in society meant that Tom Robinson was found guilty. The prosecutor responds with feigned indignity â€Å"You felt sorry for her; you felt sorry for her? † Harper Lee uses rapid dialogue in the courtroom scene to emphasise the way the prosecutor attacks Tom, like an attack on an innocent mockingbird. Harper Lee exposes not just the prejudices of Maycomb but the ugly nature of such beliefs in society as a whole.Justice is betrayed when the jury ignore the evidence and destroy the mockingbird figure of Tom Robinson. It is evident that both characters have mockingbird traits. They both show kindness – Boo to the children, Tom to Mayella. They are both innocent – Boo of the evil persona with which he is associated and Tom of the crime of rape. Both are victims of prejudice. The significance of the mockingbird motif broadens out to contain many layers of meaning and is kept alive through the narrative continually reminding the reader of the theme of prejudice with which it is associated.

Green Surname Meaning and Origin

GREEN Surname Meaning Origin: The Green surname can have one of many possible derivations. It was commonly used to describe someone who dwelled at, or near, the village green, or other grassy ground. Other possible origins include someone who favored the color green (from the Old English grene), or someone who was immature or inexperienced. Green may also have been used as the surname of somone who had played the part of the Green Man in May Day celebrations. Green is the 37th most popular surname in the United States and the 19th most common surname in England. Surname Origin: English Alternate Surname Spellings: GREENE Famous People with the Surname GREEN: Pat Green - American country music starEva Green - French actressNathanael Green - General in the Continental Army during the American Revolution Genealogy Resources for the Surname GREEN: 100 Most Common U.S. Surnames Their MeaningsSmith, Johnson, Williams, Jones, Brown... Are you one of the millions of Americans sporting one of these top 100 common last names from the 2000 census? GREEN / GREENE Surname DNA ProjectMales Greens from anywhere, including alternate spellings of Greene, MacGreen, MacGreene, McGrane, McGreen, McGreene, can join this Y-DNA project which is attempting to sort out various GREEN families. GREEN Family Genealogy ForumSearch this popular genealogy forum for the Green surname to find others who might be researching your ancestors, or post your own Green query. There is also a separate forum for the GREENE variation of the Green surname. FamilySearch - GREEN GenealogyFind records, queries, and lineage-linked family trees posted for the Green surname and its variations. GREEN Surname Family Mailing ListsRootsWeb hosts several free mailing lists for researchers of the Green surname. Cousin Connect - GREEN Genealogy QueriesRead or post genealogy queries for the surname Green, and sign up for free notification when new Green queries are added. DistantCousin.com - GREEN Genealogy Family HistoryFree databases and genealogy links for the last name Green. -- Looking for the meaning of a given name? Check out First Name Meanings -- Cant find your last name listed? Suggest a surname to be added to the Glossary of Surname Meanings Origins. ----------------------- References: Surname Meanings Origins Cottle, Basil. Penguin Dictionary of Surnames. Baltimore, MD: Penguin Books, 1967. Menk, Lars. A Dictionary of German Jewish Surnames. Avotaynu, 2005. Beider, Alexander. A Dictionary of Jewish Surnames from Galicia. Avotaynu, 2004. Hanks, Patrick and Flavia Hodges. A Dictionary of Surnames. Oxford University Press, 1989. Hanks, Patrick. Dictionary of American Family Names. Oxford University Press, 2003. Smith, Elsdon C. American Surnames. Genealogical Publishing Company, 1997. Back to Glossary of Surname Meanings Origins