Patterns of energy use (AQA GCSE Physics): Flashcards
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3 main factors changing energy use patterns
3 main factors changing energy use patterns
Population growth, technology development, electrical demand
World population growth in last 200 years
World population growth in last 200 years
1 billion to over 7 billion people
Year population growth sped up dramatically
Year population growth sped up dramatically
Since 1800
Main energy source before 1900
Main energy source before 1900
Wood (biomass)
Energy sources that became dominant after 1900
Energy sources that became dominant after 1900
Fossil fuels (coal, oil, natural gas)
New energy sources increased in recent decades
New energy sources increased in recent decades
Nuclear power and hydroelectric power
Energy use growth vs population growth
Energy use growth vs population growth
Energy use grew much faster than population
Average person's energy use today vs past
Average person's energy use today vs past
More energy per person today
Why non-renewable energy sources are limited
Why non-renewable energy sources are limited
Took millions of years to form, will run out
Environmental impact of burning fossil fuels
Environmental impact of burning fossil fuels
Releases into atmosphere
Effects of global warming
Effects of global warming
Severe weather, flooding, threats to food supplies
% of global energy from fossil fuels today
% of global energy from fossil fuels today
About 80%
Population increase since 1800
Population increase since 1800
About 7 times
Energy use increase since 1800
Energy use increase since 1800
More than 20 times