Global warming

Global warming is when the earth’s temperature raises. That happens with gases like carbon dioxide and other type of gases holds on to the heat and the light of the sun in the earth’s atmosphere, where which helps to increase the temperature. A lot of the living species cannot handle global warming, some of them die from the temperature. (http://library.thinkquest.org/CR0215471/global_warming.htm#). To understand global warming, it helps to understand the greenhouse effect. It is a glass house where they grow plants in it. The green glass lets light and heat come in and it keeps the heat inside, so it can keep the plants warm even when it’s cold. (http://0-www.school.eb.co.uk.library.hct.ac.ae/all/elementary/article?articleId=440498).

Global warming is affecting the world in many ways. It makes the sea rise and covers up some islands, and when the sea covers the plants in the island die, it will set off a lot of changes in weather conditions, and by that it will set off the extinction of a lot of plant species. The affects of global warming has already begun on animals, as you can see there are a lot of animals that are extinct. The reason some of the animals were extinct that is relative to global warming is the result of habitat loss, like for example polar bears, they live in arctic areas but now cause of global warming the ice is starting to melt so as you can see they are losing their habitat. Without plant and animals, it will be impossible for humans to survive on this planet. Humans are dependent on these plant and animal species for about everything, even in oxygen and food.( http://www.buzzle.com/articles/impacts-of-global-warming.html). Global warming is harming the living species in many ways. It destroys many huge forests, and it is also involved in acid rain. Global warming is caused by many things like, turning on a light, washing and drying clothes, using a hair dryer, riding a car, using an air conditioner and many more. (http://library.thinkquest.org/CR0215471/global_warming.htm#).

People are trying a lot of ways to stop global warming. One of the ways is that people are doing is reducing the usage of electricity, also by reducing the cars in the world because of its pollution, cars pollute a lot. Many things that cars needs makes more pollution than it, like fuel, it pollutes the air when it’s burnt. Planting trees and recycling helps also, planting trees reduces the carbon in the atmosphere, and if you recycle less trash will get burned, so by that less greenhouse gasses will be in our atmosphere. The government is trying its best to stop global warming. By that it made a law called “The Clean Air Act” so there can be less air pollution. Global warming affecting people and making them very sick or it kills them; The Clean Air Act is trying to help by making many companies change some of their products to reduce these problems. Making and using these products let out too much pollution in the air. ( http://library.thinkquest.org/CR0215471/global_warming.htm). Using less hot water helps and saves energy, like washing clothes with warm or cold water to reduce the usage of hot water, and the energy that is needed to produce it. By doing that it saves a lot of carbon dioxide release. In many areas, people can change to energy generated by clean and renewable sources such as wind and solar power. Also forests play serious role in global warming, it stores carbon. When forests gets burnt or cut down the stored carbon that was there gets released into the atmosphere. (http://globalwarming-facts.info/50-tips.html).

In my opinion, I think everyone should contribute in helping the world against global warming. The causes and solutions that is shown is an advantage for people to know some of the things that they do harms the world, so people should be more careful and start helping the world.

Word count: 644

Bibliography:

1-http://library.thinkquest.org/CR0215471/global_warming.htm#

2-http://0-www.school.eb.co.uk.library.hct.ac.ae/all/elementary/article?articleId=440498

3- http://www.buzzle.com/articles/impacts-of-global-warming.html

4- http://library.thinkquest.org/CR0215471/global_warming.htm#

5- http://library.thinkquest.org/CR0215471/global_warming.htm#

6- http://globalwarming-facts.info/50-tips.html

ELECTRIC GENERATORS

Generators are machines that help convert mechanical energy to electrical energy by using a motor. Nearly all generators are used to store electric power and generate alternating current, which reverses polarity at a fixed frequency. Since a lot of generators are attached to a power network, they must work at the same frequency. Therefore they are known as synchronous generators. http://0-www.school.eb.co.uk.library.hct.ac.ae/eb/article-9106042. Here are some types of generators.

Engine Generators:

Engine-generator is the combination of electrical generator and an engine to form a single piece of equipment. It includes fuel supply, constant speed regulator, cooling and exhausts systems. There are a lot of types of engine generators; they include small, hand-portable generators that can supply over one hundred watts of power. Regardless of the size, generators may run on gasoline, diesel, natural gas, propane, bio diesel or hydrogen.( http://en.wikipedia.org/wiki/Engine-generator) Engine generators are used sometimes when the utility power is not available.

Emergency generators:

They are used as an emergency power supply. They can be used in houses, shops or also when people go camping they use them for some of their stuff during power outages. Emergency generators come in two types, standby and portable generators. Standby generators are connected to your electricity permanently; they also have permanent fuel tanks and produce a large amount of kilowatts, while portable generators are used in isolated areas and come in smaller sizes therefore they produce fewer kilowatts. http://www.ehow.com/about_4588606_emergency-generators.html

AC & DC generators:

A single-phase generator is usually limited to 25 kilowatts or less and generates AC power. DC generators are classified as shunt, series or compound-wound. Most of the DC are compound-wound type; shunt generators are used as battery chargers and as exciters for AC generators. Series generators are usually used for street lights. http://www.engineersedge.com/motors/generators_types.htm

Signal generators:

These are five major types which generate sine waves useful in measuring the response of loudspeakers, amplifiers, microphones, transducers and acoustic sine. They are used for testing radio receivers and they measure signal to noise ratio. http://0-www.school.eb.co.uk.library.hct.ac.ae/eb/article-9067716

Automobile Generators:

Automobiles like cars, buses and trucks need direct-voltage supply to start. In today’s vehicles electric power is created by an alternator mechanically attached to the engine. The alternator normally has a rotor field coil with current through slip rings. The rectifier is used to change the power from alternating to direct form. http://0-www.school.eb.co.uk.library.hct.ac.ae/eb/article-45817

Permanent-magnet generators:

They are simple in that they don’t need any system for their delivery of field current. They are extremely dependable. However, they don’t cover for controlling the output voltage; one of the examples is the wind turbine where the generator output of changeable voltage and frequency is submitted to a power system through an electronic frequency convertor. http://0-www.school.eb.co.uk.library.hct.ac.ae/eb/article-45818

Motors and generators are a bit similar; they both force electrons in the windings to flow through the electric circuit. Before electricity was discovered people were using electrostatic generators, which generated very high voltages and low currents. In the years 1831-1832 Micheal Faraday discovered the operating principle of electromagnetic generators, and later it was called Faraday’s law; he also was able to build the first electromagnetic generator. (http://en.wikipedia.org/wiki/Electrical_generator).

Bibliography:

1-http://0-www.school.eb.co.uk.library.hct.ac.ae/eb/article-9106042

2-http://en.wikipedia.org/wiki/Engine-generator

3-http://www.ehow.com/about_4588606_emergency-generators.html

4-http://www.engineersedge.com/motors/generators_types.htm

5-http://0-www.school.eb.co.uk.library.hct.ac.ae/eb/article-9067716

6-http://0-www.school.eb.co.uk.library.hct.ac.ae/eb/article-45817

7-http://0-www.school.eb.co.uk.library.hct.ac.ae/eb/article-45818

8-http://en.wikipedia.org/wiki/Electrical_generator

Football

The world's most popular team sport, football (or soccer) is played in more than 200 countries. Men and women of all ages play football for recreation, in international competition and on professional teams. Football is played on a rectangular field that is 90 to 120 meters (100 to 130 yards) long and 45 to 90 meters (50 to 100 yards) wide. For international matches the field is 100 to 110 meters (110 to 120 yards) long and 64 to 75 meters (70 to 80 yards) wide. A goal 7.3 meters (8 yards) wide and 2.4 meters (8 feet) high is located at each end of the field. The lines marking the sides of the field are the touchlines; those on either end are the goal lines. The field also has markings for the halfway line, the goal areas, the penalty areas, the corners and the centre circle. The teams are made up of 11 players, and they play for 90 minutes and it might go for extra time, if both teams settled for a draw. ( http://0-www.school.eb.co.uk.library.hct.ac.ae/all/elementary/article?articleId=441717 )

The World Cup is a championship tournament for football teams around the world. Different countries take turns hosting the event, which is held every four years ( http://0-www.school.eb.co.uk.library.hct.ac.ae/all/elementary/article?articleId=487940 ). The tournament lasts for several weeks. However, the competition to qualify as a World Cup team lasts for much longer. Many teams compete in qualifying tournaments by region over the course of about two years. Eventually 32 teams qualify to compete for the men's trophy. There are 16 teams in the women's tournament. The teams are placed in groups of four teams each. In the first round, each team plays the other three in its group. The top two teams from each group advance to the next round. In the next three rounds teams are eliminated as they play each other. Referees for the World Cup tournament are selected from lists that are submitted by all the national associations.

English professional football (soccer) organization. The league was formed in 1888, largely through the efforts of William McGregor, known afterward as the “father of the league.” Twelve of the strongest professional clubs of the time joined in the league, and the first season's championship was won by Preston North End. In 1892 a second division was formed, and the first division increased to 16 clubs. Soon after, the league adopted the practice of promoting the first two clubs in the second division at the end of each season into the places of the last two clubs of the first division, which were relegated to the second division. A third division was added in 1920 and reorganized to form a fourth in 1958; a four-up, four-down promotion and relegation system between these two divisions was set up at the same time. Demand for revenues from television and other resources led First Division clubs to break with the league and form the Premier League in 1992. The First Division maintained a three-up, three-down promotion and relegation agreement with the new league. The Football League includes more than 70 clubs. Its headquarters are in London.

The Football League's system of divisions with annual promotions and demotions was copied by other leagues throughout Europe. ( http://0-www.school.eb.co.uk.library.hct.ac.ae/eb/article-9034812 )

Bibliography:

. http://0-www.school.eb.co.uk.library.hct.ac.ae/all/elementary/article?articleId=441717

. http://0-www.school.eb.co.uk.library.hct.ac.ae/all/elementary/article?articleId=487940

. http://0-www.school.eb.co.uk.library.hct.ac.ae/eb/article-9034812

Montana’s Sneak Peak

Montana’s Sneak Peak

Majestic. Indomitable. Words can describe Glacier National Park. Canada’s Waterton Lakes National Park has wowed nature-seekers since President Taft signed a bill creating the park in 1910. Once remote, the park now attracts two million people each year. However, glaciers landscape is changing before their eyes. Rangers and visitors watch, helplessly, as the park’s 26 glaciers disappear, victims of global warming. Naturalists estimate that by 2030 the ice will completely vanish.

• LODGES: When the park was young, few Americans could afford the journey. They arrived in nearby East Glacier and checked in at grandiose stone and wood hotels. All of the lodges survive to this day.

• HIKES: the Park’s favorite feature is the spectacular going-to-the-sun-road-50 miles of engineering audacity, sharp curves, and great views traversing the Continental Divide. A new shuttle system was introduced in 2007. Sally Thompson, a resident for three decades and partner in the Glacier Raft Company and Outdoor Center, recommends a few stops along going-to-the-sun. The first is a popular 2.3 mile hiking trail to Avalanche Lake; from there it’s a short hike uphill, but even kids can do it. It’s a wild beauty.


• WILDLIFE: Glacier Park is home to a variety of mammals, and despite the crowds it isn’t hard to see some. It’s a good place to see White Mountain goats-the park’s symbol. At the top of the Continental Divide, is a good place to see animals from a distance. Glacier Park is home to both grizzly and black bears.


Time is of the essence at Glacier National Park, where you can still see a glacier, hike amid rushing waterfalls, and lodge in a historic hotel.

Nelson, Andrew. "Montana's Sneak Peaks." National Geographic May-June 2008: 71. Web.

Bibliography:

Kharma, N., & Hajjajj, A. (1989). Errors in English Among Arabic Speakers: Analysis and Remedy. Essex: Longman. pp. 137 - 142

(1) Who did the original research? Kharma, N & Hajjajj, A
(2) What was the name of the book? Errors in English Among Arabic Speakers
(3) Who was the publisher? Longman
(4) Where was the book published? Essex
(5) When was the book published? 1989
(6) What format has been used? MLA