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Topic 3.5 Energy IGCSE Geography
Lecture notes of 7 pages for the course Geography at ESO (Topic 3.5 Energy)
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TOPIC 3.5 ENERGYIMPORTANCE OF ENERGY
Increased energy consumption is due to:
• Food production:
o The higher demand for food leads to more intensive farming, which needs more
energy for machines, light and heat.
• Industrial growth:
o Factories need energy for operations, heating, and lighting.
• Transportation:
o Increased movement relies on petrol, diesel, and electricity.
• Urbanisation:
o Increasing urban population use domestic appliances, heating, and lighting.
• Economic development:
o Rising wealth leads to people buying more appliances and technology that need
energy.
NON-RENEWABLE ENERGY
FOSSIL FUELS
, • Other countries are looking for alternative energy sources such as “fracking”
• A country that produces its own energy is self-sufficient and can control its own energy
policies instead of being controlled by the producers.
NUCLEAR ENERGY
• All thermal power stations produce heat by changing water into steam.
• In nuclear power stations heat is generated by fission (splitting of atom).
• Neutrons released bounce against each other generating heat.
• The fuel used is Uranium
• The waste generated is radioactive and lasts many years.
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