Name the country responsible for almost one quarter of global greenhouse gas emissions in 2012.
China
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5
Name the developed country responsible for the largest percentage of global greenhouse gas emissions in 2012.
USA
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15
Explain how heat in the Earthโs crust can be used to generate electricity in a geothermal power station
any three from: cold water is pumped underground; contact with hot rocks heats the water; water is changed to steam; steam is piped to, (geothermal) power sta
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15
Geothermal energy can be one benefit of living near a volcano. Suggest other benefits of living near a volcano.
any three from: lavaโ/โash (weather to produce) fertile soils for farming; tourism (scenery is tourist attraction); e.g. health spasโ/โvolcanic sceneryโ/โhot s
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15
Suggest disadvantages of solar power as a source of energy. (3)
any three from: not reliableโ/โinefficient; energy only produced in daylight hoursโ/โno power generated at night; power may not be generated when, the sky is c
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10
answer this
any two from: two parts, inner and outer; outer is liquid, inner is solid; outer core is thicker (2200โkm) than inner core (1250โkm); radius of core is 3450โk
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10
Describe two environmental problems caused by rapid population growth in cities.
pressure on land causes, deforestationโ/โloss of habitats; loss of, agricultural landโ/โgreen spacesโ/โgreen belts; air pollutionโ/โsmog, from trafficโ/โindust
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15
Industrial processes produce waste. These waste products have a number of negative impacts. Suggest three ways the production of waste products could be reduced.
low waste technologyโ/โdeveloping cleaner processes and products (at point of production); example of; recycling; processing waste and industrial products;
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10
The populations of megacities are growing faster in developing countries than in developed countries as a result of push and pull factors. Explain what is meant by the terms push factor and pull factor.
push factor: negative factorsโ/โreasons, that make people wantโ/โforce them to leave, an area; pull factor: positive factorsโ/โreasons, that attract people to
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5
The average radius of the Earth is 6400 km. Use the information on the diagram to calculate the approximate thickness of the Earthโs crust.
(6400 โ (1250 + 2200 + 2900) =) 50 (km);
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5
Name the three main types of rock found in the Earthโs crust.
igneous AND sedimentary AND metamorphic;
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10
Calculate the percentage increase in megacities in Asia between 2005 and 2015. Show your working.