The water loss from leaves through stomata Essay Example for Free

The water loss from leaves through stomata Essay Analysis conclusion As you can see from the table of results leaf 4 lost the least amount of water. Leaf 4 lost the most water because it had no petroleum jelly covering the stomata. This meant water vapour could diffuse from the leaf. My prediction was correct. However I also stated that leaf 3 would lose just as much water as leaf 1. I was incorrect. This was an anomalous result. Leaf 1 lost the least amount of water because it was covered in petroleum jelly. The water vapour, which is formed, was not allowed to diffuse into the air because petroleum jelly is non-permeable. My prediction was correct. This was be However I also stated that leaf 3 would lose as much water as leaf 4 but I was incorrect as leaf 4 lost more water. This was an anomalous result. In the result there are no patterns or trends. In the experiment I discovered that if petroleum jelly was put on the underside of the leaf, it would stop more water vapour escaping than if petroleum jelly was added to the top of the leaf or if none was put on at all. This is because at the underside of the leaf are stomata. There is water loss only through stomata. This occurs when heat from the sun causes water to evaporate from the surface of the cellulose wall. The water vapour formed then diffuses into the air. Stomata are found only on the underside of the leaf. When the underside of the leaf is covered in petroleum jelly the water vapour cannot diffuse through it into the air because it is non-permeable. This prevents the loss of water. When petroleum jelly is added to the top of the leaf (or if none is put on the leaf at all) then water vapour inside the leaf can escape through the stomata, which are found only under the leaf. The explanation is correct because there is proof of this on the graph and in the table of results Evaluation There were enough results obtained to draw a firm conclusion. The results were accurate and reliable. In the experiment however there were anomalous results of all of the leaves. Leaf 1 and 3 should have both lost the same amount of water and leaves 2 and 4 should have lost the same amounts of water. This may have happened because the leaves may have not have had the same amount of water in them at the beginning of the test. Also the leaves themselves may not have had equal surface areas. Also the amount of petroleum jelly may not have covered the whole leaf (this may have given unfair advantage to one of the leaves). The readings were not repeated when any of the values did not fit in with the pattern. The readings, which were taken, were far enough to make a firm conclusion. However the experiment could have improved. In the experiment the size and mass of the leaves were approximately the same but more accurate measurements could have been such as weighing the leaves at the start on an electro balance (before the petroleum jelly was added) to make sure the leaves had the same mass. Also the perimeter of the leave could have been measured to make sure the surface area was the same. To make the test more accurate it couldve been done twice. Also when petroleum jelly was added there may have been gaps in between (so water vapour could have diffused), this should have been checked. To take the experiment further it could have been repeated with different specie of leaf to see if the results were the same.

Black Like Me: A Cultural Book Report :: Black Like Me Essays

John Howard Griffin was a journalist and a professional on race issues. After publication, he became a leading advocate in the Civil Rights Movement and did much to promote awareness of the racial situation sand pass legislature. He was middle aged and living in Mansfield, Texas at the time of publication in 1960. His desire to know if Southern whites were racist against the Negro population of the Deep South, or if they really judged people based on the individual's personality as they said. Because of this he felt that they had encouraged him to cross the color line and write Black Like Me. Plot:   Ã‚  Ã‚  Ã‚  Ã‚  Black Like Me is the story of a man named John Howard Griffin, who underwent a series of medical treatments to change his skin color temporarily to black; a transformation that was complete when John Howard Griffin shaved off his hair, and looking in the mirror, saw a bald, middle-aged black man. The reason he does this is for an experiment to see how racism was in the Deep South from personal experience. From November 6th to December 14th in the early 60's, he hitchhiked, walked, and rode through Mississippi, Alabama, Louisiana, and Georgia. After three weeks in the Deep South as a black man John Howard Griffin produced a journal covering his change into the black race, his travels and experiences in the South, the shift back into white society, and the reaction of those he knew prior his experience. The book was published and released. The reaction on the society differed in great ammounts. Characterization:   Ã‚  Ã‚  Ã‚  Ã‚  John Howard Griffin is the main character in the story. Throughout the story, this person displayed many qualities. He showed determination because he was bound and determined to become a black man so he could expose the truth about the Deep South and how racist they were. He also showed courage, for being able to pull through and do the things he did, such as become a whole new person of another race and going into dangerous territory where he knew he wasn't really welcomed. He also displayed a sense of dignity, because after he was done with this experiment, he was threatened several times and even burned in effigy in his hometown, but he still maintained his ground as long as he could. And last, but not least, he showed us a sense of hope, because no matter what, even in the darkest times, he would still keep at least a small bit of hope in him. Black Like Me: A Cultural Book Report :: Black Like Me Essays John Howard Griffin was a journalist and a professional on race issues. After publication, he became a leading advocate in the Civil Rights Movement and did much to promote awareness of the racial situation sand pass legislature. He was middle aged and living in Mansfield, Texas at the time of publication in 1960. His desire to know if Southern whites were racist against the Negro population of the Deep South, or if they really judged people based on the individual's personality as they said. Because of this he felt that they had encouraged him to cross the color line and write Black Like Me. Plot:   Ã‚  Ã‚  Ã‚  Ã‚  Black Like Me is the story of a man named John Howard Griffin, who underwent a series of medical treatments to change his skin color temporarily to black; a transformation that was complete when John Howard Griffin shaved off his hair, and looking in the mirror, saw a bald, middle-aged black man. The reason he does this is for an experiment to see how racism was in the Deep South from personal experience. From November 6th to December 14th in the early 60's, he hitchhiked, walked, and rode through Mississippi, Alabama, Louisiana, and Georgia. After three weeks in the Deep South as a black man John Howard Griffin produced a journal covering his change into the black race, his travels and experiences in the South, the shift back into white society, and the reaction of those he knew prior his experience. The book was published and released. The reaction on the society differed in great ammounts. Characterization:   Ã‚  Ã‚  Ã‚  Ã‚  John Howard Griffin is the main character in the story. Throughout the story, this person displayed many qualities. He showed determination because he was bound and determined to become a black man so he could expose the truth about the Deep South and how racist they were. He also showed courage, for being able to pull through and do the things he did, such as become a whole new person of another race and going into dangerous territory where he knew he wasn't really welcomed. He also displayed a sense of dignity, because after he was done with this experiment, he was threatened several times and even burned in effigy in his hometown, but he still maintained his ground as long as he could. And last, but not least, he showed us a sense of hope, because no matter what, even in the darkest times, he would still keep at least a small bit of hope in him.

Psychosocial stage of development Essay

According to Erickson’s psychosocial stage of development my age lies under the fourth stage i. e. industry versus inferiority. This stage starts from age 6 to 12 and in this stage a child is shifting from dependent circumstances to more independent circumstances. Like in this stage he becomes more desired to achieve something or to finish his tasks completely. He came out of that age of fantasy and became more responsible because after entering this stage a child starts learning new things, he knows if he’ll do well in school he’ll b admired by his parents as well as other people. If a child experiences the fulfillment of his achievements basically anything positive or constructive will easily be through by this crisis stage. On other hand he also knows that if he’ll b failed to complete his task then he will face criticism from family and others as well. If a child faces failure at his school responsibilities or even worse than that he is ignored and no one wishes to accept or develop his capabilities and strengths or not given a chance to discover their potentials then it’s quite obvious that a child would feel inferior or low and inadequate to do anything (Myers, 2009). Psychosocial Stage of Development Influences Behavior and Relationships: As per Erickson’s psychosocial stage of development my behavior and relationships are very much influenced by this theory of Erickson. Influences which can be seen according to Erickson’s psychosocial stage development on me were like when i start going to school at the age of three i have no idea that what will the situations i will be going through. My mind was not big enough to understand these things but as i got into junior high school i came across certain things which I have to handle by myself whether good or bad. Next thing was my relationship to my peers or companions which is based on some rules like if I am going to play some game like baseball i need a team to play with. This shows that I have developed a strong relationship through teamwork (Myers, 2009). Than if looking to my studies I have a certain group that studies along with me, if we have a homework given we do it regularly by which my behavior patterns got controlled and i get disciplined every year after. I went through all these things and finally i got hold on how to handle psychosocial crisis because having good relationship with your peer group and develop a good behavior can lead any person to the path of success. And if one person has made good decision at this level then he can easily be cautious about taking decisions on next levels or can say that he’ll easily be industrious (Cash, 2002). Positive Influence of Psychosocial Stage of Development: Positive influences which come out of my psychosocial stage development were that i have strong bond made between me and my peer group because we use to play and study and study together. By doing this we came across many victories which made us proud and give a sense of satisfaction that we can do something that can be appreciated by our families and other people as well. As this is the middle age in which a child wants to do things by his will without interfering of others. At my academic level things have been very positive for me as there is full support of my parents by which i have developed certain skill at my own. Like if you talk about behaviour i have made a timetable and put things which are suitable for me to do at certain time frame. My behaviour towards my studies would also be considered positive because i got support from my parents and also from my teachers which helped me in many ways(Cash,2002). Negative Influence of Psychosocial Stage of Development: Talking about negative influence of my psychosocial stage of development there are certain things which made me feel inferior when i was in the middle childhood stage were that when in school teacher used to say that you have to finish your lunch even if I am not that much hungry which made me feels awful many times. Regarding this food stuff which at my home also has been an issue for me was that in that middle childhood stage i use to see my mom cooking different cuisines for our family. Sometimes i also feel like to cook something for my family but my mother always use to lower my enthusiasm by telling me that I am too small to cook. This have been left a very negative impact on me and that’s why i still don’t know how to cook food properly because somewhere in my mind I have this complex that if I will cook something it would not be worth it(Cash,2002). Other Developmental Issues Influenced My Personality: Other development issues influenced my personality in such a way that when i was born i. e. when I am in the stage of trust versus mistrust, although i was too small to know that what happened with me at that time but looking to myself i can say that my family or my parents have taken very good care of me, because i don’t see any many negative points in my personality and it’s all because of my parents. The example of trust can be given that how much I am close to my parents. Next stage would be autonomy versus shame and doubt in which a child develops a sense of being a separate human being and wants attention that everyone knows him individually. Regarding this stage there are some negative aspects of my personality that after reaching to an age of three i still was not able to go to toilet by myself because i was not properly trained. So at that time this bring me shame that kids of my age are toilet trained but I am not. But on the other hand i was very much trained to do mess while I am having my food which helps me a lot handle spoon in my hand on my own. After that another stage come which is initiative versus guilt in which a child starts taking decision of his own that whether he wants to eat or not or what things he should do. This is the age which is also known as play age, when a child starts going to pre-school or nursery. In this age a child wants to start doing things on its own or wants to take risks. Like in this stage a child starts going to school and there he learns different things and skills. Like I have said my academic time has helped me a lot to develop my personality (Cash, 2002). If I have to experiment something which help me further then my teacher encourages me to excel my abilities and this helped me a lot in taking decisions in my afterlife. Regarding the stage which I have picked i. e. industry versus inferiority these above developments have influenced my personality till my middle childhood stage (Cash, 2002). Conclusion: If i have to say that how much influenced erickson’s psychosocial stage of development has made then to me its 90% correct that whatever he gives the theory can help people to understand their children if they are facing difficulties regarding their mood, behavior or actions. Through his theory people should know that a child cannot be treated forcefully he should get full time to develop himself. It’s been seen that people who went through the crisis of their early adulthood and resolved them successfully, they who are also successful in their adolescence. REFERENCES Myers, D. G. (2009). Psychology. Worth Publishers Cash, A. (2002). Psychology for Dummies. Hungry Minds Books

Huck Finn Morality Essay - 1024 Words

In The Adventures of Huckleberry Finn, author Mark Twain uses Huck to demonstrate how one#8217;s conscience is an aspect of everyday life. The decisions we make are based on what our conscience tells us which can lead us the right way or the wrong way. Huck#8217;s deformed conscience leads him the wrong way early on in the chapters, but eventually in later chapters his sound mind sets in to guild him the rest of the way until his friend Tom Sawyer shows up. Society believes that slaves should be treated as property; Huck#8217;s sound mind tells him that Jim is a person, a friend, and not property. Society does not agree with that thought, which also tampers with Huck#8217;s mind telling him that he is wrong. Though Huck does not†¦show more content†¦Thus foreshadowing that helping a slave escape will have its consequences in the future. It also foreshadows that since Jim is now captured, Huck will have to rescue him because they have bonded so much throughout the voyag e. Huck then has to struggle with his conscience about returning Jim to Miss Watson so he decides to write a letter to Miss Watson. After Huck wrote the letter he feels like he could finally pray. #8220;I felt good and all washed clean of sin for the first time I had ever felt so in my life, and I knowed I could pray now. But I didn#8217;t do it straight off, but laid the paper down and set there thinking#8211;thinking how good it was all this happened so, and how near I come to being lost and going to hell (213).#8221; Then Huck starts to think and he thought about all of the good times that he and Jim had, and that his friendship with Jim is more important. So instead of sending the letter, Huck arrives at his moral decision and decides to tear it up and #8220;go to hell (214).#8221; Huck#8217;s sound mind now tells him that this is a true friendship because Huck has already decided that he will save Jim, no matter what the cost would be. Loneliness sets in for Huck after Jim is sold, and Huck finds out what a friendship is all about. Huck also felt loneliness before when heShow MoreRelatedHuck Finn Morality And Morality887 Words   |  4 PagesMorality, a person’s compass between right and wrong, is shaped uniquely through the experiences a person has throughout life. A parental scolding, a particularly strong sense of guilt, and wrongdoing done onto a loved one are all potential instances where our own conscience and morality come to question. Mark Twain in his novel The Adventures of Huckleberry Finn writes about a young boy, Huck, escaping his abusive father with the help of a runaway slave, Jim. On their journey, they are faced withRead MoreMorality In Huck Finn1339 Words   |  6 PagesWhich way would you direct the train? Morality plays a key role in the decision a person will make in this situation. According to Mark Twain in the novel, The Adventures of Huckleberry Finn, morals are accumulated through experiences. 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He creates characters with unique voice and helps the reader connect to the book. Anyone who reads it is forced to develop feelings for each character. Even though there is a great amount of controversy over the use of some choices, such as the â€Å"n word†, it makes the book more realistic. In the beginning of the novel Huck, a white boy, playsRead MoreMorality in The Adventures of Huckleberry Finn Essay547 Words   |  3 PagesMorality in The Adventures of Huckleberry Finn Samuel L. Clemenss, The Adventures of Huckleberry Finn, is told through the eyes of a young man, the narrator and protagonist, Huckleberry Finn. He learns about life and society through the nature of the world. He finds himself in many unpredictable situations, and constantly in different settings. These settings consist of land, the shore of the Mississippi River, or on a small raft floating downstream. There is always danger near because of