The mock will focus on the three topics below in green UNIT 1 • Restless Earth • Living World • Water On the Land UNIT 2 • Population Change • Changing Urban Environments • Tourism Three questions in mock! 30 minutes on each • Restless Earth • Living World • Population REVISION GUIDES £3 (rrp £5.99) Please ask Mrs Harris or Mr Baker Limited stock left Exam tips • Pen (spare) • Pencil • Sharpener / rubber Spellings Environment Volcano / Volcanoes Erosion Desert Deciduous Don’t forget Look out for questions without lines to write – you may have to draw on maps /graphs! Examiners cannot take marks off you – always answer the Q!! Question 1 – Living World Destructive? Constructive? Conservative? Describe the distribution of Volcanoes Convection currents in the mantle drive the plates to move!! DESTRUCTIVE CONSTRUCTIVE CONSERVATIVE Oceanic plate moves towards continental plate Two oceanic plates separate Oceanic plate subducts beneath the continental plate (as it is denser and more flexible). An ocean trench is formed. The two plates separate leaving a gap between them. Two plates move besides each other (opposite direction or one faster than the other. Friction builds up between the two plates and causes earthquakes. The oceanic plate melts in the mantle and pressure increases. This is released as a volcanic eruption (composite volcano) Magma rises from the mantle and makes its way between the plates. This comes out as lava as is runny so forms a wide volcanic cone (constructive) Pressure builds up between the two plates as they attempt to move. Eventually the plates jolt forwards as they move and the friction between the plates is released as a strong seismic wave (earthquake). Destructive • Convection currents • Move together • Subducted • Friction = earthquake • Melted plate = pressure = volcano Constructive • • • • Convection currents Plates move apart Magma rises Lava spreads out at surface • Creates a shield volcano Conservative • Convection currents • Plates move alongside each other • Friction causes pressure to build up • As plates jolt pressure is released as seismic waves = earthquake Volcanoes Mt St Helens Location / causes The oceanic Juan de Fuca plate subducts beneath the continental North American plate. (DESTRUCTIVE PLATE MARGIN) Size 8:32am 18 May 1980: an earthquake caused a landslide which released the pressure inside the volcano. Effects 57 people died (one of them a volcanologist) Airports were closed. Emergency treatment was given in nearby towns to the people rescued. 185 miles of roads, 15 miles of railway and 27 bridges were destroyed. Tourism increased to the area (3 million per year) Responses Emergency treatment was given in nearby towns to the people rescued. Helicopters were used to search for and rescue people close to the eruption. Forest in the area began to be replanted. The area became a National Park in 1982 and now attracts 3 million visitors per year. Monitoring and Predicting Volcanoes • • • • • Tiltmeters Think about how you know you Gas Sensors have a tummy upset! GPS Seismographs Thermometers (ground and water temperatures) • Animal behaviour Formation of a supervolcano Think of a big spot! Supervolcano – Yellowstone, USA Size / Shape • 1000km3 Effects • The magma chamber beneath Yellowstone is believed to be 80km long, 40km wide and 8km deep • • Caldera – large depression surrounded by a raised rim An eruption today would have a catastrophic effect. It is potentially five times the minimum size for a supervolcanic eruption by the size of the magma chamber. • An eruption is likely to destroy 10,000 km2 of land and kill 87000 people. 1 in 3 people will be killed within 1000km of an eruption. 15cm of ash would cover buildings within this area and make them collapse. This ash would ground planes and make road transport difficult. Livestock would die as they would choke in the hot ash. UK would see the arrival of the ash about 5 days later. This ash will circle the Earth, changing the climate. Temperatures will fall by over 10 degrees which will make it difficult to grow food in many areas. 40% of the population could face starvation. Certain parts of northern Europe will be snow covered for 3 years, so no food will be able to be grown. Fold Mountains Fold Mountains Challenges: Steep Relief – Use of chairlifts to travel up slopes and get fresh produce (milk) from farms down to market. Use of steep slopes for tourism e.g. skiing. Poor Soils – Use of fertilisers and farming on flat valley floor Limited Communications – New roads, railway lines (on flat valley floors) and tunnels e.g. Mont Blanc and St. Bernard tunnels. Uses HEP – generates energy for local villages (ideal snow melt in summer provides water, easy to build dam across valley) Farming - Transhumance farming Tourism – Winter (skiing) Summer (mountain biking / hiking) Industries – saw mills (wood), electrochemical, mining Geosyncline Sedimentary rock – sandstone Compressed to form fold mountains e.g. Alps Describing the distribution of ocean trenches and fold mountains Edge of oceans – Pacific Ocean Where continental and oceanic plates meet Fold mountains – west coast of North and South America ** use names Earthquakes Keywords: Focus Epicentre Seismic wave How we measure earthquakes What are the differences? Monitoring and Predicting Earthquakes • Three Ps Prediction – attempts to forecast when it will happen Protection – construction of buildings so they are safe and will not collapse Preparation – organising activities and drills so people know what to do in the event of and earthquake MEDC LEDC Location Kobe Earthquake 1995 Sichuan Earthquake, China 2008 Effects Immediate Deaths = 6500 Injuries = 40,000 Roads were at gridlock, delaying emergency services. Houses completely destroyed = 180,000. Homeless = 300,000 Industries like Mitsubishi and Panasonic were forced to close. Long-term Fires raged for days destroying 7500 houses (many of them wooden Hanshin expressway and bridges collapsed. High speed bullet trains were derailed as the rails buckled Immediate Death toll was 69 000 two months after the earthquake. * 900 students trapped in collapsed school. Parents angry about the cheap building materials used. * At least 374 000 were injured. Chemical plants collapsed, killing hundreds and spilling toxic ammonia. Long-term * 80% of buildings collapsed in rural Beichuan which was near the epicentre. * Communications were cut – no land or mobile phones worked in Wenchuan. • Rivers were blocked by landslides and there was fear they may flood. • At least 5 million (some say 11 million) were made homeless Responses Immediate Immediate Motorola maintained telephone connections for free. Major retailers like 7-Eleven helped provide essentials. Friends and neighbours searched through the rubble, joined by emergency services when access was possible. Evacuate people into temporary shelters because they were still at risk from many fires and unstable buildings. 20 helicopters used for relief and rescue operations. One million temporary small homes to be built to house those made homeless. Long-term • Rescue services are specially trained and the whole country practices responding to an earthquake on 12th January, the anniversary of the Kobe earthquake, in an Earthquake Preparation Day. • High rise buildings had to have flexible steel frames. • Increase in the number of seismic instruments use to record earth movements. • New buildings were built further apart to prevent the domino effect. Long-term Troops were parachuted in to assess the situation while others hiked in on foot. The Chinese government pledged $10 million for rebuilding. Areas of land flattened to make room for the 3.3 million tents used for emergency shelter. Tsunami Tsunami • The Indo Australian plate subducts beneath the Eurasian plate causing an earthquake. • The earthquake displaces the column of water above it upwards. • The water that has gone up comes down and splits into two waves. One wave travels out to sea and the other wave travels towards the coastal areas of south-east Asia. • The wave reaches the shoreline and gains height before it crashes onto the land. Primary cause = the earthquake Secondary cause = the Tsunami wave Tsunami – Indian Ocean, Boxing Day, 2004 Tsunami Immediate Effects Deaths: 220 000 Serious injuries: 650 000 4500 fishing boats destroyed in India Fresh water reservoirs unusable for drinking water. Bodies littered the streets Injured people wounds became infected Long-term Effects 2 million homeless 1500 homes in Banda Aceh (city in Indonesia) completely destroyed. Only one mosque left standing. Loss of tourism and fishing economies in Indonesia, Thailand and India. Immediate Responses Food, sheeting and tents sent by MEDCs. Fresh water and water purification tablets sent from the international community. Medical teams sent from MEDCs. Mass graves had to be set up Long-term Responses Rebuilding of homes and businesses, especially in tourist resorts like Phuket in Thailand. Indian Ocean Tsunami Warning System set up in 2006 so people have warning and know how to respond if it happens again. QUESTION 2 - Living World Ecosystem • A community of living (animals and vegetation) and non living components (soil and climate) and the relationships that exist between them Climate Animals Soil Vegetation Producer – organisms that obtain their energy from a primary source such as the sun Consumer – organisms that obtain their energy by eating other organisms Food Chain – a line of links between producers and consumers Food Web – a diagram showing the complex links between producers and consumers Do you know the difference? Decomposer • Organisms such as bacteria that break down plant and animal material. Scavenger Organisms that consume dead animals or plants Biome • • • • Micro Meso Macro Biome – global scale ecosystem dominated by climate e.g. Tropical Rainforest. Location /Distribution • Tropical Rainforests – along the equator (Between the tropic of Cancer and Capricorn) • Deserts – 15-30 degrees North and South • Temperate Deciduous Forests 40-60 degrees North and south Biome Case studies Name Tropical Rainforest Rich Desert Poor Desert Deciduous Woodland Borneo, Malaysia Sonoran Desert, USA That Desert, India Epping Forest, Essex, UK Climates and Soils Biome Tropical Rainforest Desert Deciduous Forest Temperature Average daily temp of 28 degrees C (never goes below 20) Daytime temperatures can be above 40 degrees C Can be very cold at night Summers warm – winters cool Precipitation (rain) 2000mm of rain per year Humid No real seasons Very dry (arid) Less Throughout the than 250mm of rain year per year Continental Interior (torrential downpour) Soils Latosol Fertile Humus layer Leaching Red/Iron Rich Rocky and Sandy Thin – can have a crust Salts deposited near the surface Brown Earth Fertility comes from leaves which fall in the winter rotting Climate graphs If you have to describe them include numbers! • Highest • Lowest • Seasons Stratified • Vegetation growing in layers Tropical Rainforest Deciduous Woodland Vegetation Adaptations Adaptation feature RAINFORESTS: Buttress roots Drip tips Thin, smooth bark Lianas Epiphytes Leaves with flexible bases DESERTS: Thick waxy skin Spikes Fleshy stem Long shallow roots Slow growing plants TEMPERATE DECIDUOUS: Losing leaves in Autumn Bluebells flowering in early Spring Explanation of how it helps the vegetation to cope with the climate Tropical Rainforest Causes and impacts of deforestion Cause of deforestation in Malaysia Detail about the cause An impact of this cause of Economic, social or deforestation environmental impact? Commercial Logging Clear felling was common in the 1980s. Deforestation threatens the survival of many species, including the orang-utan A local Penan community protested against a logging company and were imprisoned. Malaysia was the biggest exporter of tropical woods and so made a lot of money. Energy $2bn Bakun Dam project flooded thousands of hectares of forest to provide hydroelectric power for new industries. Mining For tin and drilling for oil and gas. Forest has been cleared for operations and construction of roads. Commercial plantations Forest was cleared for rubber plantations and, in the 1970s, for oil palm. 10 year tax breaks for owners has led to more forest being converted to plantations. 9000 Kenyah people have been forced to move from the flooded area. They are traditional subsistence farmers (farm enough to eat but not sell) but are being asked to pay to be rehoused. Many suffer from depression and alcoholism. Land and rivers have been polluted by mining chemicals and affected local food chains. Malaysia was the largest exporter of palm oil in the world and so made a lot of money. Sustainable management in the Tropical Rainforest Name of strategy International or national? Selective Management System (SMS) Tree is removed from forest by water buffalo rather than a lorry. Fully grown trees are selected. Arrows painted on trees to show which direction it should be felled (cut down) Replacement tree is planted. Permanent Forest Estates Areas of forest are protected – no development or conversion to plantations is allowed. 10% has special conservation status Forest Stewardship Council Educates people to buy soft, fast growing wood like pine rather than hard, slow growing wood like mahogany. Educates manufacturers and consumers (buyers) to buy wood only from sustainable sources (all their products have the FSC label on) Ecotourism Borneo – swiftlet nest caves (one used by swiftlets, one harvested for their nests to sell, one shown off to tourists) Borneo – turtles (used to eat them, now have a hatchery to show tourists who then set them free into the oceans) Tourism that focuses on protecting the environment and the local way of life. Debt relief LEDCs are paid money by MEDCs to make sure their rainforests are not cut down Deciduous Woodland Recreation – interpreting a map • Use the key to suggest recreational activities that may take place in this ecosystem Sustainable management in Deciduous Woodland (Epping Forest – Essex) Management strategy: What makes this management option sustainable? (How does it allow us to use the forest today whilst ensuring that future generations will also be able to benefit from the forest? ) Pollarding of over 1000 ancient trees. Cutting trees at shoulder height (above the level of grazing animals). Trees reshoot new branches. 1600 ha of forest is a Site of Special This offers protection under law to the forests large number Scientific Interest. of ancient trees which support a large number of animals and other vegetation. Old trees. Are allowed to die and collapse naturally unless they are dangerous. Recreation. Riding and mountain biking are restricted in places and footpaths are maintained to a good standard. Deserts Economic opportunities, challenges and management MEDC/RICH DESERT SONORAN DESERT, USA Sonoran Desert, USA Economic opportunity (employment) Families migrated to the Phoenix Farms grow wheat, barley, pecan nuts and Tucson to work on the huge and durum wheat which is exported farms, mainly growing cotton which to Italy to make pasta. uses a lot of water. In 2007, Marana began hosting golf’s PGA Matchplay Championship Retirement migration has meant lots of new housing complexes have had to be built for older migrants. The open space and clean atmosphere are very attractive to holidaymakers. In the mid-19th century ranching and mining were the big industries. Challenge (problems) Management (response) Habitats that rely on rivers are disappearing as the rivers dry up. Spare water from the CAP is being sent to refill aquifers (underground lakes). The water table has dropped by nearly 3 metres in some places. Water is being pumped out of aquifers (underground lakes) faster than they can be refilled. Conservation – farms are being shut down so water can be used in the cities. Lakes with water from Salt River are Central Arizona Project (CAP) is a the main supply of water but can only network of canals that transports provide enough for half of the city’s water from the Colorado River to the demand. cities of Phoenix and Tucson. The water table dropping has led to land the size of North Yorkshire subsiding (sinking) which causes problems for buildings and roads. The water table has dropped which means getting water from the ground has become more expensive and the water quality has dropped Waste water is being used for jobs that don’t need a high level of purity. Endangered Species Act – used to prevent developers from building more buildings which will need more water for its residents A heritage park that celebrates the town’s agricultural past attracts tourists throughout the year. . Economic opportunities, challenges and management LEDC/POOR DESERT THAR DESERT, INDIA Thar Desert, India Economic opportunity (employment) Challenge (problems) Thar Desert is the most densely Most farmers keep a few animals on Too much irrigation (watering) has populated desert in the world (83 the grassy areas and cultivate led to waterlogging in some areas. people per km2). This is leading to vegetables and fruit trees so they Salts get deposited on the ground overgrazing and over cultivation have some crops to sell at local surface and poison the plants. (farming) which leads to soil erosion. markets Too much demand for water in some Once eroded away the soil takes The Kohlis tribe survive by hunting places has caused an unsustainable thousands of years to re-form. animals and gathering fruit and fall in the water tables (it cannot natural products such as honey. continue forever). Limestone is quarried in Jaisalmer and used in the steel industry. Sand dunes are unstable and can move across farmland, roads and waterways. Management (response) Prosopis cineraria tree has multiple uses: a) planted in blocks to stabilise sand dunes and stop them moving, b) its pods provide food for animals, c) wood can be used as a strong building material and good quality firewood. Reserves of firewood, their main source of fuel, is reducing so people are using manure as fuel rather than using manure to fertilise the soil. The 650km long Indira Gandhi Canal Rajasthan is rich in minerals and the was built in 1958. It provides drinking following are mined: gypsum (makes Rainfall is very low (120-240mm per water for many people in the desert cement), phospherite (makes year) and temperatures are very high and means that commercial farming fertiliser), kaolin (whitens paper) and (53˚c) which makes commercial of wheat and cotton (selling these for feldspar (makes ceramics) farming (farming to make a profit) a profit) occurs in the Jodhpur and very difficult. Jaisalmer. People make a living selling hide and wool from livestock (animals). Trees and fences are built alongside roads and canals to block the Most people are involved with movement of sand dunes across subsistence farming (producing them. enough food for farmer and family to live off) Thar Desert National Park has been created to protect 3000 km2 of desert vegetation and wildlife. Local people act as guides on camel safaris or rear/look after the camels. The Ber Tree produces large plums and can survive in low rainfall conditions. The plums can then be sold for a decent profit. Sustainable Management • Protected for future generations Describe the strategy but also link this to how this leads to protecting the environment for future generations to use QUESTION 3 - POPULATION Demographic Transition Model You m ay need to draw stage 5 – remember Birth rate falls below Death rate Population Change • J Curve • S Curve Keywords: • Birth rate • Death rate • Natural change / natural increase • Population Growth rate Factors affecting population change Changes to farming Education and Women Mechanisation Emancipation Children are no longer needed as machinery can be used on farms Women have a voice and wish to have a career not large family Urbanisation As more people live in cities fewer children are needed for farm work and therefore people have smaller families Population Pyramids Youthful Ageing Sustainable population policy Consequences Birth Control Policy China One Child Policy Slower natural increase More only children Little emperor syndrome Antisocial behaviour Male dominated population Difficult to find partner • 1979 / 1980 onwards Couples who had one child received financial rewards Those who had more than one child were fined Reports of forced abortions and sterilisations Granny police – older members reported those breaking the rule. • Since the 1990s 1) Young couples who are both only children can have two children (help elderly) 2) Change of attitude towards girls. Some can now afford to have more than one child and break the rules 3) If the first child is a girl then couples are allowed a second 4) Sex determination scans banned in 1994 Non-Birth Control Policy Gambia Non-birth Control Policy means people are educated not forced to reduce the number of children they have Challenges • Too many young people • Religious beliefs • Multiple wives • Lack of education • Poor health care for children • School has too many students • 2 toilets for 2000 students • Running out of resources Strategies • • • • • • • • • NGO (Charity) ‘Futures’ distributed condoms to villages on motorbikes. Mobile pharmacy visiting remote rural areas. Female chat shows to discuss contraception Vaccinations for children against whooping cough etc School split day Family planning discussed Backed by religious leaders Educate boys and girls to abstain from sex Healthcare for women to space births Ageing population Graph Skills • The sections show the percentages of each group which (its like a pie chart in a line!) Ageing Population (East Devon, UK and France) Challenges More frequent visits to doctors and chemists More geriatric operations in hospitals People unable to live independently People less confident about or are unable to drive The reason this is negative is because… ….it is a strain on NHS resources. ….it means more money is needed for operations like hip replacements so less money for younger people. ….more specialist care homes are needed which costs lots of money. ….then they become isolated and lonely. Solutions FRANCE PRONATALIST POLICY Rural to Urban Migration Push Factors Pull Factors • Move people away from the place they live (rural) • Draw people towards the place they move to (Urban) Polish Migration Source / origin (Poland) Host / Destination (UK) Positive Poland Negative Poland Positive UK Unemployment is reduced as many Polish workers leave to work in the UK. Birth rate will fall as it is often young people (potential parents) who leave Poland. Population increases in the UK Many Poles spend very little on which creates a strain on accommodation and food so they can health and education services return home with money and set up a business or buy a house. More than half of Polish migrants Nearly 7 in 1000 Poles have send money home. About £4 billion is moved from Poland to the UK, transferred to Poland each year most of them younger working people leading to a shortage of workers and a shortage in pension contributions and taxes . There is less pressure on resources The Polish divorce rate has (e.g. land) as people leave to work in doubled in 7 years as long the UK. periods of separation puts a strain on marriages. Brain drain: often the more skilled and better educated Polish people migrate meaning there is a shortage of skilled labour (e.g. doctors get paid four times as much in the UK compared to Poland) Negative UK Most immigrants integrate well as new arrivals from Poland are better informed and more realistic about life in the UK. (Many children learn about the British way of life in Polish schools). Specialist language teachers and translators have had to be employed in some areas with large immigrant populations UK supermarkets have cashed in on a new market of customers. E.g. Tescos now sell over 100 different lines of Polish food. Polish businesses have opened where immigrants have settled and rejuvenated declining neighbourhood shopping areas – often doing jobs British citizens don’t want to do (e.g. farm work, fruit picking etc). Pressure on A&E hospital services as few immigrants register with a doctor. Polish labourers have filled the gaps in the UK labour market – working hard and for minimum wage. Increased racial tension in some areas of the country that has large numbers of immigrants. Refugee movements • • • • • • • • • • • • • Afghan Refugees Afghanistan had an estimated population of 28 million 3 million refugees Difficult life, drought, poverty, corruption. The Jungle – area of wasteland on the edge of Calais Entrance to channel tunnel August 2009 700-800 afghans living there (trying to get to the UK) Wanted to get to England because it is ‘good and safe’ 22nd December 2009 the remaining migrants were arrested. 24 hours later the settlement was bulldozed Many released so returned and attempted to try and get into the UK again. Asylum Seeker – seeking asylum Refugee – granted asylum Economic Asylum Seeker – claiming to need protection but actually moving for economic benefits.