This coursework assignment is to investigate resistance Essay Example for Free

This coursework assignment is to investigate resistance Essay To investigate it, we must first understand it. What is it? Where does it come from? The most fundamental basis to understanding resistance is to know about current. Electric current is a flow of electric charges. Like water in a heating system, the charged particles are already in the conductors. Most electrons in a conductor (e. g. copper) are held tightly to their atoms, but each atom in a conductor has a couple of electrons that are loosely held. Since the electrons are negatively charged, an atom that loses an electron is left with a positive charge (since the protons remain), and is called an ion. This means that copper (and all similar conductors) consist of a lattice of ions surrounded by free electrons. The ions can only vibrate in their current state, but the electrons can move randomly throughout the lattice. All metals (conductors) are made this way. When a battery is attached to a metal, the free electrons are repelled by the negative terminal and attracted by the positive one. They still move randomly, but they all move slowly in the same direction with a steady drift velocity. This is a flow of charge, an electric current. Current is measured in Amps (I). A simple circuit through a conductor looks like this: The greater the resistance of a component, the harder it is for charge to flow through it. In a conductor with a higher resistance, the electrons have more collisions with the ions than if they were flowing through a conductor with lower resistance. If there is a potential difference (Voltage, V) across a conductor, a current (Amps, I) goes through it. But when you apply the same potential difference across different conductors, the currents are different. For example, if we put a potential difference of 230V across a kettle and toaster, the current in the kettle is 10A, whereas the current in the toaster is only 5A. The current is smaller in the toaster so it must have a higher resistance. Resistance is measured in ohms (? ) and has this definition: The resistance of a conductor is the ratio of potential difference applied across it, to the current passing through it So the formula for resistance is: Resistance, R = Potential difference across the conductor, V (volts) (? ) Current through the conductor, I (amps) or R = V or V = I R I As the potential difference doubles, so does the current. This means the resistance of a wire is constant. This rule was discovered by Georg Ohm and is true for all metals at a constant temperature. As long as a metal is kept at a constant temperature, the current through a conductor is directly proportional to the potential difference across it This is ohms law, and it can help us to get good results. There are a number of factors affecting how much resistance a conductor has. They are these: Type of material Different conductors have different levels of resistivity. E. g. Copper has a much lower resistance than nichrome.   Length A short wire has less resistance than a long one. The free electrons have to travel a farther distance in the long wire, passing between more ions. This increases the chances of an electron hitting one, therefore there are more collisions, thus a higher resistance.   Cross-sectional area A thin wire has more resistance than a thick one. This is simple due to the fact that more electrons can flow through a thicker wire, similar to the way more water can pass through a wider pipe. Temperature In metals, a hot wire has more resistance than a cold one. This is because, as a metal heats up, the ions vibrate more. This increases the chance of them colliding with electrons, thus there is a higher resistance. The resistance of a wire at constant temperature depends on its dimensions, and the material from which it is made. Every material has a property called its resistivity (p). It is measured in ohm metres (? m). The higher the resistivity, the harder it is to charge flow through the material. Conductors have low resistivities and insulators have very high ones. If we know the resistivity, the cross-sectional area and the length of a sample material, we can calculate its resistance thus: Resistance, R = Resistivity, p (? m) x length, l (m) or R = p l (? ) Cross-sectional area, A (m2) A So now that we understand what resistance what are we going to do with it? Why an experiment of course! Im going to be investigating how the length of a wire affects the resistance. I will try passing the same voltage through different lengths of the same wire and see how length affects the resistivity. Prediction I predict that the longer the wire is, the higher the resistance.

Social action plans: drugs and alcohol

Social action plans: drugs and alcohol Table of Contents Background Objectives Proposed Actions Anticipated Outcomes Key roles and responsibilities Timelines and resources required Key risks Evaluation Method References Background Drugs and alcohol is a major social issue (J. David Hawkins, Richard F. Catalano, and Janet Y. Miller, 1992). It is not something that can be solved by the law (Lee P. Brown, 2008). Throughout history, many attempts have been made to try and legalize and control alcohol and drug addiction but has failed. It requires education, international awareness and a lot of work to resolve. Whilst alcohol and certain drugs are not illegal, the potential dangers are well documented. It is in many regards, worse of a problem than other social problems such as smoking. Not only does it create health problems, but creates a habit from a young age that is hard to avoid (Kabir Ayub, 2011). This affects families, schools and the larger part of society. It creates a burden for law enforcers, violence, accidents and a lot of other side-effects. Drugs and alcohol have especially been a major issue in NSW full of pubs and night life. Major incidents of violence at many locations have been recorded. The number of police officers required to monitor and deal with incidents have greatly increased since 2011. New laws, curfews and extreme measures had to be put in place (NSW Government, 2014). This shows that inaction is a major cost to society and is a major burden on the government and law enforcers. Local Christian Churches have been chosen to address the issue. Drugs and alcohol is an international social problem that is very hard to tackle. The local Christian communities serves as a good attempt to address problems in the local community. Studies have shown that peer influence is a major factor in drugs and alcohol abuse (Karl E. Bauman, Susan T. Ennett, 1996). The church will be able to put a positive influence back to society to help change this issue. The church (religion) is and has been a major influence to society. Religion helps shape lives. Objectives The key objectives in this action plan are to raise awareness about drugs and alcohol and to create a series of events to reduce the consumption of drugs and alcohol. In raising awareness of the adverse effects of drugs and alcohol, we hope to increase public understanding of what they are, the potential harm and the damage it has caused to our society. Local churches often run campaigns to promote Christianity and raise awareness of their religion. It would be viable for them to continue as is, but include flyers and other advertisements that target alcohol and drugs. Through a series of special events, such as alcohol free nights, we create incentives for those addicted to drugs and alcohol to attend and make it a habit to reduce consumption of drugs and alcohol. These events are aimed at providing the first steps for affected people to adjust to life without harmful substances. It is business as usual for local churches as they already run local community events. Running alcohol and drug themed campaigns fits in with their schedule and aim to promote and improve the greater community. For example, a family bbq gathering can include an extra clause of being alcohol exempt. The key theme is to use religion and the major influence of the church to shape lives, stop alcohol and drug abuse and to increase awareness. Proposed Actions Use of social media to link and highlight key media that raise awareness. Through official Facebook, Twitter and other accounts of the churches, social media is a strong platform to push information. Door to door knocking and handing out pamphlets is part of a Church’s day to day activities (Archie Poulos, 2010). Within the advertisements, the church can embed information on drugs and alcohol to further increase awareness. Anti-drug and anti-alcohol posters can be posted within the premise. Each time people visit the church they will be able to see these media items and gain awareness to the drug and alcohol problems. Preaches every Sunday can be used to influence the followers on reducing consumption of alcohol. Religion is known to have a major influence and the voice of god is very useful. Prayers will help those guilty of drugs and alcohol be persuaded to change and move away from these harmful substances. Alcohol and drug free events can be introduced as part of normal family events and gatherings. Prizes and other rewards can be introduced as an extra incentive. Families can get together and share their experiences. Anticipated Outcomes The anticipated outcome is increased awareness in drugs and alcohol. Social media activities such as Twitter and Facebook can easily be measured by likes, replies, retweets and other common statistics. This can provide numbers on the number of people have read and reacted to the postings. The local community will be more aware of its harmful effects. They will be able to spread this out to other local communities via word of mouth to further increase awareness. The community will be educated to stop alcohol/drugs based violence and help report/resolve any incidents. Parents will be able to educate their children to prevent the next generation early on. Another anticipated outcome is reduced consumption of drugs and alcohol. Alternatives such as soft drinks and replacements can take its place. Alcohol and drugs driven violence should be reduced. Families will increase in happiness. This will reduce load on the community and even local council/government. This means funding and resources can be better spent elsewhere and further improve lives. Key roles and responsibilities Within a church, many of the staff are volunteers, including the door knocking staff. Different staff will be required for each action point. The organization structure is rather flat. The media advisor will be in charge of coordinating the social media activities. They will be spreading the message via the church’s social media account. Door to door knocking events will coordinated by the normal door knocking organizer. Posters will be reviewed and signed off by the priest. Alcohol and drug free events will be reviewed by the events coordinator. Preaches and prayers will be reviewed by the priest. The key is to add extra roles and responsibilities to existing staff. Timelines and resources required The church anticipates that the promotional campaign will run for a month and based on feedback may be extended. Most of the action points are ongoing and will be held in part every Sunday as part of the Church gathering and extended events. Social media, posters and door knocking will be incorporated with day to day activities. The idea is to enhance and set the theme for the staff to work on – to add their current jobs. No extra resources are anticipated except a potential external graphics design company to create the promotional poster. All other efforts are conducted by current staff of the church, such as priests and other volunteers. Families are encouraged to help out as they normally would. Extra funding is anticipated and this will be sourced from the church’s annual budget. The church does not expect a huge burden on the budget. The staff may have to put in extra hours to meet the deadlines to get this kick-started. The local social worker can be contacted for further assistance and to attend special events to help the church out in assisting any attenders that do have actual problems in life with drugs and alcohol. Local doctors would also be a useful resource in helping with providing material and assisting with drug and alcohol effects on the body. Key risks A key risk in raising awareness about drugs and alcohol is that it may get some people that were previously never interested to try the mentioned products based on curiosity. Many people may be unwilling to identify themselves as an addict to drugs and/or alcohol. This may be due to peer pressure, family issues and others. This will make it difficult to convince these people to join the events created especially for them. Preaches may be seen as some as propaganda campaigns and a way to control and restrict an individual’s freedom. Care must be taken at the wording, how it is addressed and it must be linked back to Christianity. Lack of attendance or feedback may also be an issue. Over time people could be back to their old lifestyle. Evaluation Method An attendance count can be used to evaluate how many people are interested in the series of events. An anonymous informal survey can be used to further gauge the situation. This helps to evaluate how effective the proposed actions are and also direction for further action. A follow up survey months later can be used to see if lifestyle has changed. Informal discussions and interviews can be had to see what effects it has had on lifestyle of people. Social media feedback is the most evident and can generate huge discussions. There are many statistics used to measure the success of a social media campaign, such as the number of retweets. The local police stations can be contacted before and after to determine if the number of reported incidents related to drug and alcohol abuse has decreased. References Lee P. Brown, 2008, Two takes drugs are a major social problem we cannot legalize them, US News, 25th July, 10th May 2014, http://www.usnews.com/opinion/articles/2008/07/25/two-takes-drugs-are-a-major-social-problem-we-cannot-legalize-them Kabir Ayub, 2011, Drug addiction: A Social Problem!, 24th March, 10th May 2014, http://pamirtimes.net/2011/03/24/addiction-a-social-problem/ NSW Government, 2014, New measures rolled out to target drug and alcohol fuelled violence, 21st February, 10th May 2014, http://www.nsw.gov.au/news/new-measures-rolled-out-target-drug-and-alcohol-fuelled-violence J. David Hawkins, Richard F. Catalano, and Janet Y. Miller, Risk and Protective Factors for Alcohol and Other Drug Problems in Adolescence and Early Adulthood: Implications for Substance Abuse Prevention, Psychological Bulletin Vol 112, 1992, 10th May 2014, http://adai.washington.edu/confederation/2008readings/Catalano_86.pdf Karl E. Bauman, Susan T. Ennett, On the importance of peer influence for adolescent drug use: commonly neglected considerations, Vol 91, Issue 2, pages 185-198 Archie Poulos, 2010, Doorknocking is fun?, 25th Match, 10th May 2014, http://sydneyanglicans.net/blogs/churchlife/doorknocking_is_fun Social Action Plan: Group Name Social Action plan: Team members: Description of the Issue: 1 | Page

Comparing Ambiguity in The Turn of the Screw and The Innocents Essay

Ambiguity in The Turn of the Screw and The Innocents    How successfully does the black-and-white film version of The Turn of the Screw, The Innocents (Jack Clayton, 1961), render the ambiguity of James' original text?   Ambiguity, the art of deliberately creating something that can have more than one meaning, lends itself to the written word without difficulty. A written story can involve ambiguity in the characters, plot, narrative - every factor in the story can have to it a sense of uncertainty. However, uncertainty concerning ambiguity is subtly different from uncertainty involving vagueness; the former is a deliberate ploy by the writer to leave interpretation open to the reader's own imagination, whereas the latter comes about due to a lack of detail delivered on the part of the writer, probably due to lack of talent or attention.    With The Turn of the Screw, Henry James crafted an immensely complex and highly ambiguous book - there is nothing vague here; when Jack Clayton decided to make it into a film, he faced an upward struggle. Adapting a book for a film is always beset with difficulties - the written word has the ability to be far more subtle than the projected frame - but capturing the ambiguity of The Turn of the Screw would be immensely difficult. Words do not have to be precise in their meaning but a picture on a cinema screen is just a picture - there is little subtlety or uncertainty. A director has to employ imaginative techniques to make a viewer doubt what he is so evidently seeing. This was especially true in 1961, when The Innocents was produced, a time before sophisticated visual effects came into use.    Almost all of The Turn of the Screw is open to alternate interpretation ... ...e. As with many book-to-žlm adaptions, a desire to change the ending is the žlm's undoing.    In some respects the žlm captures the ambiguity of the original text extremely well - the existence of the ghosts and supporting characters, the involvement of the children - but the more subtle ambiguous parts of the book are lost in the žlm, which is too specižc in places, particularly the ending.    One point that should be taken into consideration is that this essay was written based upon a version of The Innocents that had been cropped to žt a television screen ratio, losing the original widescreen footage. Therefore it was impossible to fully appreciate the director's true vision; consequently, some claims (such as Grose rarely being in the same shot as the governess) may only stand when a third of the picture has been lost.

The Salton Sea Essay -- Geography

The Salton Sea Introduction The Salton Basin , a below-sea-level depression which extends on the north from Palm Springs , California, to the Gulf of California , in the south. The Salton Sea has undergone historic cycles of filling with water and later drying up. The most recent predecessor to the Sea, that being Lake Cahuilla , last filled this area between 300 to 500 years ago and at one time had a surface elevation above sea level. In 1905 the flooding of the Colorado River was accidentally diverted into the Salton though and thus the Salton Sea was born. When the Colorado River floods retreated in 1907, the surface elevation of the Salton Sea slowly began to drop until the 1930ï ¿ ½s when agricultural drainage from the Imperial and Coachella Valleys sustained its level. Soon after , this Sea was turned into a state recreation area, wildlife refuge and a sport fishery. To this day, agricultural drainage and run-off is the major source of water inflow to the Salton Sea. When it was Healthy When the Sea was healthy it, drew recreationists from all around and was a popular sport fishing site. The marine level of salinity made it a great place to race boats and allowed for the introduction of salt water marine life. With all this attention the north side shore line soon became the Salton Sea State Recreation Area . Not only was this area attractive to people , but it was soon populated by birds and turned into a critical link for flocks of migratory birds along the Pacific Flyway. As a result , the Salton Sea National Wildlife Refuge was established on the south end of the Sea in the 1950ï ¿ ½s.(The Salton Sea Authority and the Bureau of Reclamation , 1997) Current Conditions Today the Salton Sea contains 7.3... ...tm 4. Hunter, Duncan & Lewis, Jerry & Brown, George &Calvert, Ken(1998).Speaker Gingrich, Mary Bono join Salton Sea Task Force in unveiling "Sonny Bono Memorial Salton Sea Reclamation Act". Congressional Salton Sea Task Force. 5. Kellert, S.R. and E.O. Wilson, editors. 1993 The Biophilia Hypothesis. Island Press, Washington, DC 6. NEPA. 1998. The NEPA Fact Sheet. Online. Available http://www.gsa.gov/pbs/pt/call-in/factshet/0397/03_97_9.htm 7. Salton Sea Authority and Bureau of Reclamation .1997. The Salton Sea : Opportunities and Challenges. A brochure. 8. Taylor, Dan. 1998. Audubon Society Inspired to Action by Bird Die -offs . 17 Jan. 1998 . E-mail . Available bkus@sunstroke.sdsu.edu 9. The Salton Sea Authority and the California State Water Commission presentation of : Salton Sea Symposium II - various speakers. The Salton Sea - January 1998

Essay --

A Feminist Approach to Susan Glaspell’s â€Å"Trifles† The approach being used for Susan Glaspell’s play is feminist criticism. Glaspell’s play was written in 1916. In the 1900s women were expected to stay home, clean, cook, and take care of the family. Men were the providers of the household, smarter, and in control. Today women are more independent. They are running businesses and taking on more masculine jobs such as, firefighters and police officers. Women are even working and raising families. In some households the wife works while the husband stays home. A woman can do a man’s job and maybe sometimes better. Linda Napikoski explains, â€Å"Feminist criticism is the analysis that arises from the viewpoint of feminism, feminist theory and/or feminist politics. Feminist literary criticism suggest that women in literature were historically presented as objects seen from a male perspective. Feminist literary criticism actively supports including women’s knowledge in literature and valuing women’s experience. It has since intertwined with postmodernism and increasingly complex question of gender and social roles.† â€Å"Trifles was based on true events. In 1900, a man named John Hossack was murdered with an ax while he slept. His wife, Margaret claims to have slept through the murder. The Jury did not believe her story and found her guilty of murder. Susan Glaspell, who was a journalist with Des Moines Daily News, covered the trial for her newspaper. Even though she did not have any criminal justice background, Glaspell acted like a true detective. She investigated the murder by visiting the farmhouse where Hossack and his wife Margaret lived. She also interviewed attorneys and studied testimonies. Glaspell became very impressed with the st... ...what his life was like behind closed doors. He could have been abusive and angry towards his wife causing her to snap. â€Å"She – come to think of it, she was kind of like a bird herself – real sweet and pretty, but kind of timid and – fluttery. How – she – did – change† (1074). Mrs. Wright did change. She felt trapped in her marriage and she needed to escape. Her life was stolen from her. She strangled her husband and took his life. She probably felt that her life was already over and it wouldn’t matter if she were put in prison or not. Women might see things in a different light than men. They want to please the man in their life, but at the same time they want to be respected and seen as a human beings with feelings. Women today are stronger and more in charge and they don’t allow for a man to come into their life and destroy what they have built for themselves.

Project Management Institute Essay

The main motive of the Project Management Institute is to make the project management indispensable for the generation of the ultimate business results. PMI functions in over 170 countries having members more than 265000 at their advantage, thus making it as a leading membership association for the profession of project management. It is one among the best not-for-profit and non-political organization which conducts programs with the governments, industries and organizations to deliver the best project management programs with the best results. PMI education foundation speaks on the knowledge gaining and portraying the skills and the art for educational and social welfare. PMI also promotes research and providing avenues for building up wealth of information and also indulging in offering certification, networking and activities involving the community at large, thus managing to attain its global presence and global certification in their noble profession. Scope of its Membership: Becoming a member of the PMI institute gives an opportunity for the members to get themselves certified as a professional imparting and demonstrating the skills required thereby helping themselves in standing out in the crowd. To become a member PMI has varied plans suiting the different segments based on their needs where in there are plans for an individual – for those willing to learn and update the best practices in businesses, student – those having degree program at a recognized institute, retiree – having retired from active employment and has a good reputation for 5 consecutive years and those interested in renewing their memberships (renewal). The various benefits which the memberships provide – include the vast knowledge sharing and information search happening in generating the opportunities for themselves and the institute. It gives immense openings for capturing on the capability of getting them networked through the different PMI communities there by getting nurtured with respect to the leadership qualities and being an active participants as volunteers in the various communities, certification programs, research programs, standard programs etc. The members also have scope of getting accessed to the knowledge resources of PMI known as the Project Management Body of Knowledge and also their career frameworks. Along with this opportunity which the members can acquire, they also have an edge over non-members in terms of getting access to the various publications, journals, e-links, virtual library, eReads and References which are set by PMI. The reason one should join PMI is to allow them to be build relationships, improvise on once skills, gain the latest and the first hand information and learn some of the best known practices. Memberships in PMI showcase certain features and characteristics to the peers which indicate their enthusiasm in quality, productivity and return on investments, their seriousness about their own individual development and their own profession and finally their commitment to the ethical business practices shown by the institute. The services which PMI provides to its members – With respect to the career development provided to the members of PMI, the association helps in availing the Certification and the Credentials, providing an extensive job search database which is availed by Career Headquarters at PMI, Making themselves groomed by undertaking various Training and Events happening by seminar worlds, to e-learning initiatives and providing the ultimate solution to the best practices and opportunities in the field of learning and in turn meeting up to the schedules, goals and the interests of the institution. PMI also guides the members in customer services, flexibility in changing and viewing orders, information on payment, pricing and promotions opportunities, shipping and handling assistance, privacy and security all under one umbrella known best for its marketplace. PMI has a strong Business Solutions concept which keeps the members get going by the challenges they have in career framework, Business and Government solutions on a global front to build up the institution on a worldwide basis and providing Organizational maturity in terms of managing the projects, programs and portfolios to generate and plan for its growth. This PMI provides project management implementation and consultancy services to their members and customers by providing added benefits in terms of the latest releases, news archives, articles of interests etc. The five major groups which PMI builds upon its profession are Initiating, Planning, Executing, Monitoring and Controlling and closing phases and the various knowledge areas which they address to are integration, scope, time, cost, quality, human resources, communications, risk management and procurement.

Hockey Sport Essay

Hockey is a fast, exciting sport played by two teams on a sheet of ice called a rink. Each team has six players on the ice, one goalie, two defensemen, two wingers, and one center man. The players skate up and down the ice shooting or passing a hard rubber disk called a puck with sticks. They score points by hitting the puck into the net. Hockey is much faster and swifter than any other sport. As the players streak across the ice, their powerful shots and passes can send the puck faster than 100 miles [160 kilometers] per hour. A goalkeeper on each team defends his net from the puck going in. They must often make quick slides across the on their skates, stomachs, knees or backs to stop the puck from going into the net. A puck that crosses the goal line is a called a goal and scores a point for the other team. The side that scores the most goals wins the game. To keep the action fast, hockey has an unusual rule. It is the only major sport that allows players to change or substitute during play. The game is rough and includes lots of hitting and some fights, although fighting is against the rules. The ancient Egyptians, Greeks, Persians, Romans, and Arabs, perhaps among the earliest of stick-and-ball games, played forms of hockey. A sport similar to hockey, called Hurling, is known to have been played during the 1st millennium in Ireland, and other Europeans in the Middle Ages adopted similar sports. The historians don’t know for certain where the name Hockey came from. But most of them thought the name hockey have been adapted by the English from the French word hoquet (shepherd’s crook). How ever was the name first given to the sport in the 18th century, but was not in common usage until the 19th century. Hockey then started in Canada in the mid-1800’s. By the 1900’s it had become Canada’s national sport. Since then, hockey has become popular in many other countries including Russia, Sweden and the United States. Hockey is grouped in many different divisions including minor hockey, which is grouped into age categories, SJHL, WHL, OHL and IHL, which involve the smaller cities in province or state, and NHL, which involve the bigger, better known cities in Canada and the United States. Each period begins with a face-off at the center face-off spot. A face-off also starts play again after it has been stopped for any reason. During play, the puck must normally be kept moving. If it is hit over the boards, held by the goalie, out of the referee’s sight, frozen between opposing players, or is otherwise temporarily out of play, an official blows a whistle for a face-off. A player may move the puck along the ice, pass it to a teammate, or shoot it at the goal, but rules limit these plays in certain ways. One extremely important rule states that no player of the attacking team may be in the attacking zone ahead of the puck. One player must carry or shoot the puck across the attacking blue line before any other player on the team crosses the blue line. For violations of this rule, an official signals the offending team offside and conducts a face-off in the neutral zone. A player may pass to a teammate anywhere in the same zone. The player may also pass from the defending zone to a teammate in their team’s half of the neutral zone. If the pass is received past the centerline an official signals the pass offside and conducts a face-off where the play began. Hockey requires a variety of skills. They include checking, skating, passing, stick handling and shooting. Checking is the way a player takes the puck away from the opponent. There are two main types of checks: stick checks and body checks. For a stick check the player uses his stick to hook or poke the puck away from the opponent. In a body check the player bumps against the opponent with a hip or a shoulder to try any block the opponent’s progress or throw the opponent off balance. Both stick checking and body checking are allowed only against a player in control of the puck or the last player to control it. Skating is the most important hockey skill. Players must be able to turn sharply, skate backwards and perform many other maneuvers while skating at top speed. They must be able to do this with their head up and while stick handling the puck. Passing occurs when a player who has the puck passes it to another player. In most cases the players use their sticks to propel the puck toward the receiver. These passes are either flat passes or flip passes. To make a flat pass the player sends the puck traveling along the surface of the ice. To make a flip pass the player causes it to rise off the ice to avoid interception by an opponent. Sometimes the passer simply leaves the puck behind, so that a teammate can get it, this is called a drop pass. Stick handling is the use of the stick to control the puck. The player first moves the puck with one side of the blade and then with the other side while skating. The player makes some sweeps of the stick some wide and some narrow. In this way the player keeps the opponent guessing as to the next move and also makes it difficult to steal the puck. Shooting is the skill needed to drive the puck into the net and score goals. Most shots are either wrist shots or slap shots. In a wrist shot the blade does not leave the ice. The player uses strong wrist action to propel the puck. For a slap shot the player raises the stick for a back swing and brings it down against the puck with great force. Slap shots are more powerful but less accurate than wrist shots. Offside plays and icing account for most violations of the rules. For these violations, the offending team risks losing control of the puck in the resulting face-off. For more serious violations, players receive penalties ranging from two minutes in the penalty box to removal from the game, but each team must always have at least four players on the ice. If a third player is penalized while two teammates are in the penalty box, a substitute may replace the player on the ice. A teammate may serve the goaltender’s penalty. Hockey has five main kinds of penalties: minor penalties, major penalties, misconduct penalties, match penalties and penalty shots. Minor penalties are given for violations like holding, tripping or hooking resulting in two minutes in the penalty box. The team must play short-handed until the time is up or the other team scores. But if the same minor penalty is awarded against players on both teams they sit for the full to minutes and two different players may replace them on the ice. Major penalties are given mainly for fighting or cutting or drawing blood with a stick, they result in five minutes in the penalty box. The penalized team must play short-handed for the full five minutes, but if a player on each team receives a major penalty at the same time, substitutes may replace both players on the ice. Misconduct penalties are given mainly toward the improper treatment towards an official, which results in ten minutes in the penalty box, but a substitute may replace the penalized player. A game misconduct penalty is given mainly for more serious offences against officials. Match penalties are given for deliberately injuring or attempting to injure an opponent. The offending player is removed for the rest of the game and usually given extra penalty minutes depending on the severity of the incident, which a player on that team has to serve. Penalty shots are free shots at the opposing goal defended by only the goalie. They are awarded against the defending team when an attacking player throws his stick or is pulled down from behind and is so prevented from taking the shot. Those are the rules and regulations of the fun and exciting game of hockey.