teachers notes unit 3

Página 1

energy use

factors affecting energy use now and in the future

things to understand:

-pre capita engery consumption varies between different countries

-know the main factors that influence it

- its importance in development and quality of life

Economic factors

eg. affluence and the ability to buy engery-using appliances, relative cost of energy and the amount of disposible income availible to pay for it

level and type of industry

Any energy used in industry adds to total used pre capita and total energy used

Heavy industry such as, mining, ore processing and the chemical industry use a lot of energy

Climate

cold climates increase engery use for heating

hot climates increase energy use for air conditioning

Social / environmental awareness

some countries are aware of the need to conserve and the benefits of doing so , eg. Denmark and Sweden

some countries are less aware, normally due to local source or affluence, eg. USA, UK

national and global trends in energy demands

changes in amount and type of industry

many countries the develope primary industries such as mining, also develop secondary industries such as manufacturing which uses less energy. Primary industries may decrease do to energy depletion and competition with other countries cheap labour costs. tertiary industries such as services use much less energy.