ENERGY AND WATER REVISION

RENEWABLE ENERGY - Wind + Solar

WIND 

- Clean form of energy

- Can be placed at sea away from cities

- Visual pollution

- Wind is reliable

SOLAR

- Clean form of energy

- Can be used on a small scale (solar panels on roof)

- Expensive too manufacture

- Not everywhere receives enough sunlight

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Hydroelectric Power (HEP)

HEP

- Clean form of energy

- Dams can also prevent flooding

- Only limited number of rivers can be damed

- Means large areas of land have to be flooded, including settlements

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NON-RENEWABLE ENERGY - Oil + Coal

OIL

- Energy production can be easily increased to meet demand

- Technology and infrastructure needed already exists

- Produces large amounts of greenhouse gases

- Mostly located in politically unstable countries

COAL

- Energy production can be easily increased to meet demand

- Technology and infrastructure needed already exists

- Produces large amounts of greenhouse gases

- Very bulky so expensive to transport

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Gas

GAS 

- Energy production can be easily increased to meet demand

- Releases less greenhouse gases than other fossil fuels

- Located in politically unstable countries

- Vulnerable to leaks and explosions

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ENVIRONMENTAL PROBLEMS

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Problems caused by Global Warming

- Rising sea levels as ice caps melt

- Coastal flooding

- Loss of biodiversity

- Desertification

- Increased tropical storms 

- More heatwaves

- Coral bleaching as ocean temperatures rise

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TYPES OF RESOURCE

FOSSIL FUEL - combustible organic matter then is made from the remains of flora and fauna

RENEWABLE - naturally occuring and potentially infinite resources

NON-RENEWABLE - resources that cannot be reproduced in the time taken to consume them

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Nuclear

NUCLEAR

- Technology and infrastructure already exists

- Releases very few greenhouse gases

- Risk of nuclear accidents

- Can be misused by countries to develop nuclear weapons

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WATER USE

Areas of high water demand do not coincide with areas of high availability.

Agriculture is the biggest user of water, followed by domestic use and then industryDemand is increasing as the world's population not only increases but also develops.

PHYSICAL WATER SCARCITY - water is not available

WATER STRESS - demand for water temporarily exceed water supply

ECONOMIC WATER SCARCITY - water is available but is inaccessibly/unusable due to lack of money

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