7 markers Flashcards
(71 cards)
For a named volcano you have studied, explain the causes of a volcanic eruption? *
Eyjafjallajökull
1)
- stratovolcano in the south of Iceland.
- on the constructive boundary between the North American (moving westwards) and Eurasian (moving eastwards) tectonic plates, which makes up the mid-Atlantic ridge, as well as being on the Icelandic volcanic hotspot.
- most recent eruption began on the 20th of March, 2010 and continued into June of that year.
2)
- On a constructive boundary, the North American and Eurasian plates are moving apart by convection currents in the mantle and sea-floor spreading.
- Resulting in the creation of a low pressure gap between the two plates.
- Pressure from asthenosphere results in low density magma forcing its way through cracks and fissures in the crust until it reaches the surface of the crust to erupt as lava once sufficient pressure builds.
- This causes volcanic eruptions and the lava cool and solidifies.
3)
- phenomenon is exacerbated by the location on the Icelandic hotspot, meaning that there is a plume of rising magma beneath the island that increases the pressure with which magma is forced upwards through cracks.
- As a result, necessary pressure for an eruption occurs more frequently.
- E15 also has a glacier on its summit, meaning that any eruption will cause a large amount of ice to melt, leading to water flowing into the summit crater and being superheated, causing more explosive eruptions of gas.
- its eruptions can have multiple stages as water rushes in multiple times after an initial release of hot gas and lava.
Describe the main features of a delta and explain its formation. *
1) Explain the formation
- When rivers meet seas or lakes, they deposit their carried material. The absence of tidal currents can lead to delta formation.
- Rivers must carry a large amount of sediment for deltas to form and require a large amount of deposition to form.
- Flocculation, when salt particles stick together, and bioconstruction, when vegetation slows the river, increase deposition
- Delta formation requires a rapid drop in river velocity and primarily form on flat land.
2) Features
- A delta typically comprises:
Fore-set beds at the base, formed by heavier material.
Lighter suspended particles form bottom-set beds.
Top-set beds, layers of alluvium, deposited over the fore-set beds.
- The river might split into distributaries atop the delta, aiding its growth.
- Vegetation further stabilises the sediment.
- Deltas can adopt various forms such with the arcuate delta (like the Nile Delta) and the bird-foot delta (like the Mississippi Delta) being the most prominent.
For an example of a country you have studied, explain why natural population growth rates are high? *
Niger
1) Lack of contraception
- 90% of the population is Muslim
- Lack of education about contraception.
- Highest fertility rate in the world in 2016 of 7.0 per woman.
2) Culture
- Men dominate and want 12 children on average.
- Children for labour.
- Early marriages - 60% involve under 16s.
- High birth rate
3) High infant mortality rates and poor health care.
- 47 deaths/1000
For a named area you have studied, explain how economic activity is managed to reduce the risks to the natural environment. *
Encouraging ecotourism
* Ecotourism is tourism that has little on impact on the environent and involves contributing positively to local ecosystems.
* An example of a popular ecotourism attraction in Jamaica is the National park, called the Blue and John Crow Mountains.
* The environment is protected because nature reserves and eco-lodges are built.
* The park accounts for 4.5% of Jamaica’s land surface.
* Entry fees are $10 for adults in national parks to allow the preservation of local wildlife.
2) Marine Parks
* The Negril Marine Park nature reserve was established in 1998 to help preserve sea life that tourist snorkellers and divers want to see such as coral reefs.
* The Park covers a total area of approximately 160 km2.
* The park is managed through enforcement of the Marine Park Regulations with ranger patrols and zoning.
3) Reducing Pollution:
* A water treatment plant was built at Logwood, a town in Jamaica, to limit pollution from Negril’s hotels.
* Jamaica introduced a ban on single-use plastic bags, plastic straws and Styrofoam in a bid to reduce the impact plastic is having on the environment.
* Plastic pollution results in flooding as it piles up in waterways as well as damage to coastal and marine ecosystems.
* Sea mammals such as whales and turtles as well as sea birds and other sea life ingest plastics leading to fatalities. Microplastics discovered in fishes is then in turn is consumed by people.
For a named settlement you have studied, state its functions and why these developed here? *
Cornwall
1) Administration
- Administrative centre for the county Cornwall.
- There is Cornwall Council and Cornwall’s Courts of Justice.
- Developed due to the strong economy in the 19th century.
2) Shopping centre
- Wide range of national High Street chains e.g. the White company, Primark and Joules.
- Also indoor and outdoor markets
- Historically a significant market town.
3) Port
- The Port of Truro is 10km2
- 1500 of the 4500 moorings in the Fal estuary are in the port.
- Coastal location
For a named urban area you have studied, describe and explain the characteristics of the CBD? *
-The City of London is the CBD however Canary Wharf is also included.
1) High Land Values and Intense Land Use
- Land prices are some of the highest in the world due to limited space and high demand for office, retail, and institutional space(especially in areas like Bank, Canary Wharf, Mayfair).
- Buildings are often tall and densely packed to maximize space use.
2) Concentration of Business and Finance
- Headquarters of global banks, law firms, insurance companies (e.g., HSBC, Barclays, Lloyd’s of London).
- 2022: London came second (after New York) in the Global Financial Centres Index.
- As a global financial center, London’s CBD attracts multinational companies due to connectivity, prestige, and skilled labor.
3) Retail and Entertainment Functions attracting tourists
- Hosts high-end shopping streets (e.g., Oxford Street, Bond Street).
Includes cultural landmarks: West End theatres, restaurants, galleries.
- London is the second most visited city
4) Excellent Transport Connectivity
- Major transport hubs: Liverpool Street, Bank, London Bridge, Charing Cross.
- Dense underground network, buses, taxis, and Crossrail (Elizabeth Line).
- Thousands of commuters and tourists flood in daily. Over 500,000 work in the city alone.
Describe the opportunities provided for local people by a named river you have studied? *
1) Water supply
- The Indus and its tributaries are the main water supply for Pakistan’s population of over 200 million.
- There are treaties between India and Pakistan about use of water in the Indus tributaries.
- Irrigation and agriculture. Rainfall in the southern parts of the country is less than 250 mm per year but there are rich alluvial soils. There is a complex irrigation network of dams and canals, including the 1350-m-long Guddu Barrage.
2) Hydroelectricity
- For example, the Taunsa Barrage produces 100 000 kilowatts of electricity.
- This is vital for urban centres and heavy industry.
3) Fishing
- This is particularly important in the Sindh area.
- Palla fish is a delicacy for people living along the river with Sukkur being the major fishing centres.
- Fish farming of pomfret and prawns is important in the delta.
Impacts of named volcanic eruption? *
E15
1) Damage to infrastructure.
- Homes and roads were damaged
- Services were disrupted
- Water from glaciers melted causing flooding (jökulhlaup) especially Markarfljót glacial river
2) Economic impact due to no-fly zone.
- Europe’s biggest tourism businesses lost between £5 million and £6 million per day.
- Airlines lost a combined £130 million per day in lost revenues according to the International Air Transport Association.
- Kenya’s economy lost $1.3 million a day in lost shipments to Europe.
- Huge increase in passenger numbers on Eurostar.
- Iceland’s tourist industry is now worth $3 billion due the spike in interest.
3) Impact on agriculture
- Ash contaminated local water supplies.
- Ash covered crops resulting in lower crop yields.
- 500 local cattle had to be evacuated.
- However, soil fertility has increased in the long term as the ash provides minerals and nutrients.
For a named river you have studied, describe the hazards and difficulties of living close to it?/ impacts of flooding. *
1) Loss of life
- In 2010 1700 people died
- People were killed by drowning or electrocution.
- Or they were crushed by collapsing walls.
- About 450,000 livestock were lost.
2) Loss of homes and infrastructure
- In 2010 over 700,000 homes were damaged or destroyed causing widespread homelessness.
- Damage also occurred to roads, railways, bridges and the electricity network.
- In 2010 10,000 schools were damaged or destroyed.
3) Damage to land
- In 2010 the floodwaters covered roughly 1/5th of Pakistan’s land area.
- In 2016, 690,000 hectares of arable land were inundated.
- Many people suffered from malnutrition and lack of clean water
- 6 million needed food aid.
For a named area where tourism is important, describe and explain how it has negative impacts for the people. *
1) Rapid urbanisation
* Areas have become built-up, congested and polluted.
* Mass tourism has mostly affected the areas around Jamaica’s north coast resorts, east of Negril and as far as Ocho Rios.
2) Water scarcity
* Tourists consume huge amount of water. One study found that the average tourist in Jamaica uses between 600 and 2000 litres of water per night.
* This means that less water is made available to locals and they consume, between 4 - 10 times less water.
3) Jobs
* Although, tourism has created jobs it has also has negative impacts on employment
* Many of the jobs are very unstable and also seasonal. E.g. the global pandemic hit, services industries, like hotels. 50,000 employees directly employed in the tourism sector had to be laid off.
For a named area of tropical rainforest, explain why deforestation has taken place. *
Borneo
1) Agriculture
- Local farmers burn areas of forest to clear land for crop plantations.
- 190 000 hectares on Borneo Islands are devoted to rice production.
- In West Kalimantan, vast areas of peat swamp forests have been cleared for palm oil plantations.
2) Commercial logging
- Trees are felled for timber.
- Legal and illegal logging have been major drivers of deforestation, fueled by demand for tropical hardwoods.
- Sarawak (Malaysia) has experienced heavy logging since the 1980s.
3) Road building
- Roads such as Pan Borneo Highway Project (a 5,324-kilometer road network) have been built to provide access further into the forests
For an example of international migration you have studied, describe the positive and negative impacts on the country of origin.
Poland
1) Remittances
- Polish migrants send home £2.2 billion in remittances a year.
- Multiplier effect.
2) Reduced population has improved quality of life in Poland.
- Reduction in unemployment due to vacant jobs.
- Reduced strain on services.
- Reduced levels of congestion and pollution
3) Decrease in the working age population.
- 80% of the workers who migrate to the UK are between 18 and 35 years old.
- Ageing population increasing the dependency ratio.
- Loss of skilled workers especially in the construction sector.
For a named country you have studied, describe the problems which have been caused by a
high rate of population growth/large dependent population?
Niger
1) Poverty
- People cannot work because they are caring for children.
- High taxes because dependent population don’t pay.
- 45% live below the poverty line
- The economy is the second poorest in the world
- Low literacy rates and reliance on agriculture means it is difficult for people to find jobs so there is high unemployment rates.
2) Poor health
- Only 2 doctors per 100,000 people
- 90% lack proper sanitation
- 50% of rural population lack access to safe drinking water
- Pressure on working population to provide food.
- 38% of children under 5 are underweight
3) Poor education
- Large young dependent population to provide education for.
- Low literacy rates and only 4 out of 10 girls finish primary school.
For a named urban area you have studied, describe the problems of urban sprawl for the people living there? *
1) Traffic congestion and transport
- The Favelas have few roads and usually don’t have access to public transport.
- Transport systems are overloaded leading to smog.
- 2022: jam over 180km long . Commuters lose 1 month a year in traffic.
- 7 million cars registered in the city.
2) Housing
- Migrants have to find a patch of ground that no one else wants.
- This is usually on the outskirts, steep slopes or places liable to flood. (Marginalised land)
- They have to build shelter with whatever they can find e.g. cardboard or wood.
- Shanty towns known as favelas.
3) Healthcare
- There are insufficient doctors and clinics.
- Poor sanitation leads to cholera and typhoid.
- Air pollution causes respiratory problems.
- Only 1.4% of people with COVID-19 symptoms in the favelas such as Heliopolis were tested.
Management of volcanic eruption?
E15
1) Emergency services
- Icelandic Red Cross
- Helped to evacuate people (800 evacuated)
- Provide emergency supplies and food.
- Clear ash and debris
- Set up service centres for psychological support, general advice and insurance issues + 24 hour emergency hotline.
2) Prevention of flight accidents from ash.
- Airspace of many European countries close (largest air traffic shutdown since World War 2)
- Over 100,000 flights cancelled over 8 day period.
3) Monitoring of volcano
- Icelandic Meteorological Office.
- Monitors earth movements, water conditions and gases.
- They were aware that E15 was behaving strangely 11 weeks before due to gases given off and minor earthquakes.
- Ash cloud was monitored
For a named country or region you have studied, describe the effects of food shortages?
1) Malnutrition:
* Very big issues in regions such as Lubombo
* Chronic under-nutrition is a particular problem for children - leading to slower growth and vulnerability to disease.
* 25% of children under the age of 5 are stunted.
* Kwashiorkor is a common protein efficiency disease amonst children in Eswatini which can lead to death
* Life expectancy is a mere 60 years old
2) Economic decline:
* The malnourishment caused by food shortages hugely reduces the size of the work force in Eswatini.
* Many children are also ill so can’t receive a proper education and learn skills necessary for jobs.
* This small workforce damages Eswatini’s economy because businesses can’t function efficiently and little produce can be produced.
3) Dependance on international food aid
* Many parents have given up on farming since the 1990s droughts and rely on food aid.
* Therefore children don’t learn agricultural skills.
* The UN World Food Programme fed more than 200,000 people in the aftermath of the 2016 droughts.
For a named country you have studied, describe the problems which have been caused by a
low rate of population growth or population decline.
For an example you have studied, describe and explain the land use of a farm or agricultural area. *
1) Hot climate
* Sugar needs a hot climate.
* Eswatini’s Low Veld area has an average monthly temperature of 29 °C in summer, and temperatures rarely fall below 15°C. There are also a lot of sunshine hours every day.
2) Characteristics of the land
* Eswatini’s Low Veld region has flat land suitable for large-scale mechanisation.
* The alluvial soils in the river valleys are rich in nutrients and retain moisture.
3) Access to markets
* Entry to international markets provided by government trade agreements - a political input.
* Trade agreements include the United States Sugar Program, which allows sugar sales to the USA.
For a named country or region you have studied, describe and explain the natural factors that cause food shortages. *
Eswatini
1) Drought
* E.g. there was a very bad drought in 2016 caused by an El Nino event (60% less rain then the average)
* The harvest produced 10% of the required food & 40,000 cattle died.
* There is a lot of erratic rainfall e.g. in 2020, making it difficult for farms to produce consistently.
2) HIV/AIDS
* Has badly weakened the population.
* In 2016, 27% of the population were infected (the highest rate in the world)
* Significantly reduces agricultural workforce.
3) Limited arable land
- Only a small portion of Eswatini’s land is suitable for agriculture due to mountainous terrain and poor, infertile soils in some regions.
- This requiring more inputs (like fertilizers) which small-scale farmers may not afford and restricts the amount of staple crops can be grown locally, especially during poor seasons.
Impacts of named earthquake? *
Japan Earthquake March 2011
1) Casualties
- 16,000 lives lost
- 6,000 injured
- Majority of deaths were caused by drowning from tsunami waves.
- Very vulnerable to tsunami because majority of people live on flat, narrow coastal plains because interior is so mountainous.
2) Damage to infrastructure.
- Exacerbated by aftershocks and liquefaction (where water trapped in soft sediments were released by shaking).
- 125,000 buildings were destroyed and nearly 1 million damaged.
- Heavy damage to roads and railways.
3) Economic loss
- Port of Tokyo damaged disrupting trade.
- 4.4 million residents left without electricity.
World Bank has estimated that it was costliest natural disaster in world history with an economic cost of $235 billion.
For a named country or area you have studied, describe the different methods which are used to supply energy. *
1) Natural Gas
* Natural gas accounted for 14% of Germany’s energy mix in 2022. Which was a drop of 10% from the figure in 2020.
* A reason for this drop is that Germany is heavily dependant on Russia for its supply and this supply has been affected by the Ukraine-Russia war.
* Now it obtains the majority of its supply from Norway via Europipe I.
* Germany’s governments likes natural gas because they see as a bridge to a low-carbon economy because it produces much less CO2 emissions when combusted than coal or oil.
2) Coal
* Coal accounted for 30% of its energy mix in 2022.
* Germany has large reserves of 2 types of coal - lignite, which is heavily extracted in Sachsen and bituminous coal, which is heavily mined in Saarland.
* It is important that coal power stations are located close to the mining areas to reduce transportation distances.
* It is an important source of energy as it is cheap due to the large reserves in Germany. It is also not reliant on other nations.
3) Wind Power
* Wind energy accounted for 22% of Germany’s energy mix in 2022.
* Germany has the biggest wind energy capacity in Europe due to it bordering both the North and Baltic Sea.
* The majority of Germany’s offshore turbines are located in the North Sea, where there are about 1300 spinning.
* Wind energy is increasing as Germany follows the Energiewende policy to transition to a low carbon energy supply.
For a named coastal area you have studied, describe the impacts of a tropical storm. *
Typhoon Haiyan, Philippines
Nov. 8, 2013 Super Typhoon Haiyan, category 5 storm, hit the Philippines with sustained wind speeds of more than 150mph.
- Tacloban City on the island of Leyte was 90% destroyed
- Affected more than 14 million people across 44 provinces, displacing 4.1 million people, killing more than 6,000 people and leaving 1,800 missing.
- In addition, Typhoon Haiyan damaged 1.1 million houses, destroyed 33 million coconut trees (a major source of livelihoods).
- Disrupted the livelihoods of 5.9 million workers.
- Overall the damage was estimated at US$5.8 billion
For a named urban area you have studied, describe the strategies used to improve the housing conditions of the people who live there. *
1) Housing: self-help schemes
- Residents of the favelas are provided with the materials to improve their existing shelters.
- Residents may also be given rights of ownership.
- Local authorities provide electricity, water and sewerage disposal.
- E.g. Favela Diadema, cost the government $30 million for 80,000.
2) Zones of special interest (ZEIS)
- Official Brazilian policy shifted in the 1980s toward slum upgrading instead of eradication and “zones of special interest” have been designated for disorganized slums, formally recognizing their existence and qualifying them for social services.
- Example of a ZEIS in São Paulo is Heliópolis, one of the largest favelas in the city (over 200,000 residents).
- Public investment has led to improved infrastructure.
3) Sanitation schemes
- Basic amenities provided such as water and sewage facilities.
- 2000-2007: Brazilian government and the World Bank delivered clean water and sanitation.
- It cost $47 million.
For a named urban settlement you have studied, describe the causes and effects of one problem faced by the people living there?