Summary
GGH1503 SUMMARY NOTES CHAPTER 15
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- University Of South Africa (Unisa)
GGH1503 SUMMARY NOTES CHAPTER 15
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Nonrenewable EnergyChapter 15
,Core Case Study: How Long Will
Supplies of Conventional Oil Last?
Oil: energy supplier
How much is left? When will we run out?
Three options
• Look for more
• Reduce oil use and waste
• Use other energy sources
No easy solutions
,15-1 What Major Sources of Energy
Do We Use?
Concept 15-1A About three-quarters of the
world’s commercial energy comes from
nonrenewable fossil fuels and the rest comes
from nonrenewable nuclear fuel and renewable
sources.
Concept 15-1B Net energy is the amount of
high-quality usable energy available from a
resource after the amount of energy needed to
make it available is subtracted.
, Fossil Fuels Supply Most of Our
Commercial Energy
Solar energy
Indirect solar energy
• Wind
• Hydropower
• Biomass
Commercial energy
• Nonrenewable energy resources, e.g. fossil fuels
• Renewable energy resources
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