1Learning objective
7.2.1—Energy source types
New• Renewable: wind, solar, tidal, wood, geothermal, hydropower
• Non-renewable: nuclear, fossil fuels
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2Learning objective
7.2.2—Global energy consumption rising
New• Population increase, per capita demand
• Fossil fuels dominate, renewables increasing
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3Learning objective
7.2.3—Energy source sustainability
New• Varies significantly
• Both types have environmental costs
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4Learning objective
7.2.4—Country energy choices
New• Factors: sustainability, cost, pollution, efficiency, availability, security
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5Learning objective
7.2.5—Intermittent energy production
New• Some renewables require energy storage
• Solutions: batteries, pumped hydroelectricity, fuel cells, thermal storage
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6Learning objective
7.2.6—Energy conservation and efficiency
New• Reduce dependence on imports
• Behavioural changes, efficient technologies
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7Learning objective
7.2.7 (HL)—Energy security
New• Access to affordable and reliable energy sources
• Improved by efficiency, diversification, reducing imports
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8Learning objective
7.2.8 (HL)—Fossil fuel dependence
New• Global economy depends on finite reserves
• Coal, oil, natural gas
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9Learning objective
7.2.9 (HL)—Nuclear power
New• Non-renewable, low-carbon electricity production
• Fission reactions (uranium/plutonium)
• Advantages: low-cost, constant, low-carbon
• Disadvantages: mining impacts, thermal pollution, accident risk, radioactive waste
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10Learning objective
7.2.10 (HL)—Battery storage requirements
New• Large-scale needed for emission reduction
• Requires: lithium, cobalt, rare earth elements
• Mining/processing create pollution, geopolitical tensions
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