Energy choices Flashcards
List renewable energy sources
Solar Hydroelectric Geothermal Biomass Tidal schemes
When was fossil fuels discovered and converted into the main energy source for transport?
The industrial revolution
Energy consumption is much higher in _____ than _____. The economies of _____ are based on energy generation from _____. _____ have less ______ and rely on _________.
MEDCs LEDCs MEDCs Fossil fuel LEDCs Technology Natural resources
Give reasons as to why non-renewable energy sources are more commonly used globally
Cheaper
Technology is already in place
Fossil fuels are formed when ______ and ______ decompose in ______ conditions, and are subjected to ______ and ______ over thousands of years.
Animals Plants Anoxic Heat Pressure
Advantages of fossil fuels
Cheap
Plentiful
It can be delivered over long distances by pipeline
Disadvantages of fossil fuels
Unsustainable
Vastly contributes to climate change
Expensive to clear up oil spills
Why is fossil fuel usage expected to increase in the future in LEDCs
Increasing:
Population
Income
Technological advancements
Why will renewable sources of energy be popular in the future?
More attractive
Fossil fuels will be more expensive
List the advantages of hydro-electric power
It can be switched on easily - reliable
Relatively cheap to run
List the disadvantages of hydro-electric power
Flooding
Dams may restrict the flow of sediment - affects ecosystems
Increased erosion rates
Expensive to build
List the advantages of nuclear power
No carbón dioxide emissions
Technology is readily available
A large amount of electrical energy can be made by one plant
Very efficient
List the disadvantages of nuclear power
Waste is extremely dangerous
There is always a small possibility of failure
Uranium is scarce
Why does the Middle East have an economic and political advantage in terms of oil?
It controls about 60% of the worlds remaining oil reserves.
Countries that depend on the Middle East for oil need to:
Help ensure political stability
Maintain good political links
Involve the Middle East in economic operation
