Explain how atmospheric circulation gives rise to the formation of low and high pressure areas in your chosen climatic region
Explain how atmospheric circulation gives rise to the formation of low and high pressure areas in your chosen climatic region. Illustrate and explain the seasonal changes in the distribution of these pressure systems. The circulation of the atmosphere in Tropical regions is described by Hadley's cell. This is affected by two main processes, and pressure gradient force is the first of these. This says that air will move from the area of higher pressure to an area of lower pressure. The greater the difference in pressure, the stronger the airflow will be. The second main process is Coriollis' force. The rotation of the Earth deflects the air moving across the Earth's surface. The rotation deflects air to the right in the Northern Hemisphere and the left in the Southern Hemisphere. These two forces play a major part in the Global Circulation that is the key to the World's climates. Hadley's Cell explains the Tropical circulation; this is a direct cell, as it is a result of direct heating from the sun. It begins at the Equator, where the most intense solar radiation is found, making it the hottest place on Earth. The warm air rises from the Equator causing low pressure. This area of low pressure is often called the Doldrums, and is an area of heavy convectional rainfall. The rising air now spreads out pole wards and cools. The cooling air sinks over the tropics, creating high
Limestone - What is it?
Limestone What Is It? It is a sedimentary rock composed primarily of calcium carbonate (CaCO3). The calcium carbonate was deposited by the remains of marine animals. These organisms secrete shells that settle on ocean floors as a type of gloop. Limestone tends to be organic but it is seldom inorganic. Limestone tends to make up 10% of the accumulated volume of sedimentary rocks. What Is Its Chemical Nature? Limestone is calcium carbonate. It is also moderately soluble in acid, which is a disadvantage when it comes to building. It is made of secreted shells, and limestone can also come into a different form such as chalk, dolomite or marble because of certain pressures in the making of the rock. Why Is It Important As A Building Material? Limestone is very popular in architecture. Limestone is readily available and it is relatively easy to cut in specific shapes or blocks or even for more extensive and elaborate carving in which there is precision design. It is also long-lasting and it is still tough even in exposure. Limestone used for construction is also good in humid and hot environments. What Are The Drawbacks Of Using It In Buildings? Limestone is an extremely heavy material and it is also very expensive to obtain. It is vulnerable to acids, so therefore it is highly susceptible in places where acid rain is a high occurrence. The acids in the rain are capable
How are Glaciers formed and what land forms do they form ?
How are Glaciers formed and what land forms do they form ? A glacier is formed as a result of an accumulation of snow over a long period of time. The snow puts pressure on the lower layers of snow, which then transform into ice. This is because the weight of the top layers of snow compact the snow so tight that an icy layer forms. This process keeps on going on and starts to expand down the valley. This is due to gravity and space. The Glacier will grow in a v-shaped valley which will then erode into a u-shaped valley. For glaciers to develop the temperature has to be always below 0°C. Glaciers are formed when there is an interruption in the hydrological cycle (water cycle). This happens when the rain drops freeze due to the very low temperatures (has to be below 0°C). The rain drops turn into snow and so the whole process begins. Once the glacier is formed and starts to grow down slope, the snout pushes debris and rocks (see erratics) with it. Eventually when the glacier has stopped growing and as it starts to retreat back up the valley, a ridge of dirt is left at the bottom of the valley. This is called terminal moraine. Recessional moraine is formed when the glacier has already retreated once and grown back down the valley, but not as far as the terminal moraine. Between these two which can act as a natural dam, a lake can be formed. As the glacier grows down slope
"Organic farming is all very well, but can it feed the world?"
Introduction: It is necessary for the purpose of this assignment to start by defining what is meant by "Organic Farming". It can simply be defined as "farming without chemicals" which is very much the case. The two articles provide arguments of whether organic farming is sufficient to provide sustainable source of food for the increasing population. Two different points of view are expressed in the articles. "Organic farming is all very well, but can it feed the world?" In his article Lawrence Woodward main argument was the ability of organic farming to feed the world provided that many factors should be considered and probably changed. Factors that has nothing to do with the technical aspect of organic farming, but more to do with the recent global system of handling the agricultural economy, e.g. food distribution system, marketing, finance and even political aspects that affect this matter. He sees that with the current circumstances of industrialization and population largely consuming the limited resources including land being used for trade production, neither organic nor conventional agricultural systems can feed the world. In his opinion, we can feed the world if we: - Write off the third world depts. - Stop subsidizing crops (e.g. tobacco). - Create favorable fiscal environment. - Provide access to land. - Develop global strategy for soil and water
Case Study Hull North Ferriby - Describe the impact of the A63 (Ferriby by-pass) on North Ferriby.
Case Study Hull North Ferribv. Satellite / Commuter Settlement. . Describe the impact of the A63 (Ferriby by-pass) on North Ferriby. The A63 has made life easier for the residents of North Ferriby, noise and traffic has been significantly reduced as commuters travelling to Hull can use the by-pass instead of travelling on the B1231 through North Ferriby. The B1231 could become crowded if there was an accident or problem on the A63 as it could be closed meaning the B1231 would probably be used. 2. What is meant by the term satellite/commuter settlement? This is a village or town where the residents work in a nearby town or city. They live in the area and commute to work. The residents will be wealthy and own a car to drive to work. They consider living away from the city to be a better quality of life. 3. Describe the socio-economic groups that live in North Ferriby. Explain why they live in this location. The socio-economic groups are mainly skilled occupations, which are non-manual, managerial & technical. These are the groups with the highest percentages, 10% professional also live in the area. The people have a lot of money and can afford to live in the area, the houses are expensive and crime is low. 4. What is meant by the term "Counter Urbanisation"? Counter urbanisation is the term used when people move away from the large cities towards the smaller towns and
With reference to key debates in the literature, examine the significance for patterns of regional development of ONE of the following aspects of contemporary economic development: (4) Growing dependence of service employment.
With reference to key debates in the literature, examine the significance for patterns of regional development of ONE of the following aspects of contemporary economic development: (4) Growing dependence of service
The Future of the British Countryside.
THE FUTURE OF THE BRITISH COUNTRYSIDE Nick Everitt, December 2003 (1475 words) The Future of the British Countryside For centuries the British rural landscape has been dominated by agriculture, beginning with Neolithic man about five thousand years ago. Before then, most of Britain was covered with forest. Prior to the Bronze Age (about 1700 B.C.), what agriculture existed was 'slash and burn', with no permanent settlements. The Bronze Age saw the establishment of a more permanent field pattern. When the Romans arrived, bringing with them new species of flora and fauna such as pheasant and Castanea sativa (sweet chestnut), they began the drainage of the fens and British wetlands began to be lost. The Normans found, upon their arrival, that most large tracts of forest had been lost to agriculture and they set about restoring some forests in order to facilitate their enjoyment of hunting. By the Middle Ages, sheep farming had become extremely important, leading to the creation of large areas of open grassland for grazing and, ultimately, to gradual enclosure, culminating in the parliamentary enclosures of the eighteenth and nineteenth centuries which brought heathlands under the plough. People lost land and common rights and workers were displaced from the countryside into towns to find work. It was the two World Wars that revived agriculture. Britain's supply lines
Marketing Assignment - The Macro Market Environment
Andrew Galea MARKETING ASSIGNMENT The Macro Market Environment Before a Company launches a new product it must be aware of the environment that this will be introduced in. This is done to make sure that the product meets all expectations and respects the specifications that are needed to abide by the law. There are a number of factors, which need to be taken into consideration before a product is launched. One of these is the Macro-Market - the National Environment. This consists of the Political Environment, the Economic Environment, the Social & Cultural Environment and the Technological Environment, amongst others. One of the most meaningful aspects that must to be taken into consideration when introducing a new product into the market is the Political Environment. A Company wouldn't introduce a new product in a time of political instability, it would either wait for the waters to calm down, or it may have to be forced to choose another target market. The Company producing might want to find out if any assistance is given by the government; if it would be more profitable for the Company to produce in an overseas factory or locally; if there were possibilities of the government being overthrown - these are just some of the numerous questions the Company needs answers to, before it introduces its new product. Once the product is introduced the Company has to be sure that
Human Impact on the Environment - Problems caused by population growth.
Human Impact on the Environment Problems caused by population growth In about 1830 the human population reached one billion, there are now somewhere around six billion people on the planet today and that figure is growing at a very high and very rapid rate. Past populations were controlled by disease, war and famine but now because of technology and modern medicine. The environment around us has been built to support these growing numbers but this development is having a huge effect on the world's ecosystems. Human population's clear other space and habitats of other species to make way for their own. This ignorance has killed many species to extinction and polluted the environment; this has endangered our survival and the survival of other species at risk. However, in natural ecosystems factors are limiting whereas human ecosystems are different as we have the technology to maximise resources and find new ones when existing ones run out. The planet obviously can only hold a certain number of people, most species never reach their maximum numbers but they have a peak, then the numbers start to decline. Activities that have changed the landscape Industrial and domestic waste has to be disposed of, and as the population is increasing the waste is becoming more and more difficult to get rid of. There are a lot of things that cause pollution in varying rates on a big scale
Geography revision - flooding - Urbanisation - Population problems
Case studies : . Mississippi Flood 1993 2. European Flooding 1994-5 3. Bangladesh Flooding 4. 3 Dams Flood Control 5. Sea Pollution North Sea 6. Braer Disaster 1993 7. Raw Material Orientated Industry St Helens 8. High Technology Industry Livingstone New Town 9. Bluewater Regional Shopping Centre 0. Docklands 1. Peterborough Traffic Problems 2. Counter-Urbanisation Woodbury Devon 3. Rural to Urban Migration in Brazil 4. Bangladesh Shanty Towns 5. Sierra Leone Population Problems 6. Sweden Population Decrease 7. China Population Policies 8. Mexico to USA immigration 9. Amazon Rainforest 20. African Fuelwood Crisis 21. Impact of Changing energy on Holmewood North Derbyshire 22. South Korea This is the complete list of all the case studies by Rebeca . Mississippi Flood 1993 High risk: Prone to flooding, many tributaries & for much of course is above flood plains Causes: Cool dry Canalan air combines with unstable air from the Gulf of Mexico Heavy rain saturates flood basin - April Thunderstorms & flash floods lead to heavy rain and run off - June Record rainfall on already saturated ground - July Effects: Bridges washed away and levees collapse, which protected towns Roads and railways collapse (only 1 road bridge open, no rail) Cities flood ruining property and river traffic stops Farmland becomes unworkable leading to loss of income
