Energy issues- AS level geography (types and UK energy mix)

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Information about Energy issues- AS level geography (types and UK energy mix)

Published on February 26, 2014

Author: Bethany96



I will be uploading the full course soon. However, for now I have uploaded types of energy and energy mix of the UK

Energy issues AQA AS Geography

Types of energy There are two major categories of energy resources: Non renewable ( finite, stock or capital resources) • fossils fuels e.g. Coal, oil, gas and nuclear. • These energy sources have built up over time. • Once the stock has been used up, there is no more due to the slow rate of formation. Renewable (flow or income resources) • Solar, HEP, geothermal energy, wave/tidal power, wind power and biomass • Yield a continuous flow that can be consumed in any given time period without endangering future consumption, as long as current use does not exceed net renewal during the same period.

Renewable vs. Non-Renewable

Renewable energy can be subdivided Critical: Sustainable energy resources from forests, plants and animal waste which require management Some renewable resources may be depleted by heavy use or misuse. The lifestyle of the resources is restricted e.g. Wood. Wood is a renewable resource however critical because trees take a while to grow and if there is heavy usage then the stock may be depleted. Non-critical: Everlasting resources such as tides, waves, running water and solar power

Primary & secondary Primary resources can be renewable and non-renewable: Primary energy is released from a direct source. E.g coal, oil, wood and Uranium. Secondary energy is primary energy converted into a different form e.g. When heat energy is used to generate electricity or Petrol. Secondary energy tends to be for commercial and industrial use. This is increasing due to urbanisation.

Energy mix- UK Describes the combination of primary resources a country uses Now Coal: 17.7 % (fall) Oil: 31.9% (fall) Gas: 42.3% (rise) Nuclear: 7.6% (rise)

Energy mix more detail- UK non renewable The depletion of oil and gas reserves has caused the UK to depend on imports. In 2004, the UK became a net importer for the first time since 1993. 2005: * 76% energy from fossil fuels *19% Nuclear *4.5% renewable RENEWABLE ENERGY FACTS 82% of renewable energy was biomass (2006) Aim: by 2020, 20% will be renewable energy

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