climate change Flashcards
Explain ways in which climate change has occurred due to natural events
-Milankovitch’s theory tilt/orbit affects energy reaching earth
-41000 years change tilt greater tilt more sunlight to polar regions
-Global temp raised sunspot peaks 11 year pattern
-eruptions dust sulphur absorb/reflect lower temp
-retreating ice more fresh water changing currents
Explain the human causes of climate change
-burning fossil fuels CO2 atmosphere
-coal power factories/make electricity
-more cars more petrol/diesel fuel Nitrous Oxide into atmosphere
-demand beef more methane belching/dung
-methane 20x more effective CO2 traps heat
-accounts for 20% enhanced greenhouse effect
Discuss a range of possible impacts of climate change
-rise sea levels thermal expansion oceans/ melting icecaps
-coastal (Bangladesh) flood large displacement loss of property
-extreme weather more (floods/droughts)
-frequent intense hurricanes raised sea temp
-forest fires dry seasons Australian bush fires
-rise sea temp coral bleaching, expels algae goes white
Many strategies have been implemented to both reduce greenhouse gas emissions
and to manage the effects of climate change:
a) Explain strategies that you have studied and
-government RRR less waste landfill
-PT,walk,cylce/hybrid/electric cars less fossil fuels
-renewable/clean energy more
-Paris Agreement developed/developing limit to 2 degree rise
-government policies smart meters energy efficiency
-desalination plant London fresh water during drought runs on renewable only
Many strategies have been implemented to both reduce greenhouse gas emissions
and to manage the effects of climate change:
b) Comment on their effectiveness.
-less waste landfill = less methane atmosphere
-Hybrid/Electric = too expensive to buy
-smart meters = pushed 2025 technology not ready
-renewable energy = 2020 97% Scotland demand met
-Desalination Plant = money better spent reducing water waste
