climate change Flashcards
what are the natural causes of climate change
orbital changes
solar output
volcanic ash in the atmosphere
what are the human causes of climate change
burning fossil fuels to release CO2
cattle release methane
deforestation
4 social effects of climate change
increased risk of disease winter related deaths decrease with milder winters crops affected flood risk increase repair costs ski industry can decrease
4 environmental effects of climate change
increased rough in areas such as the mediterranean lower rainfall causes water shortages sea levels rise ice melts so habitats are lost decline of biodiversity in places
how scientists provide energy for climate change
significant rise in sea levels
warmer sea temp
atmosphere is warmer
dendrochronology
give one positive and one negative of climate change
increase in forest growth
coral bleaching and decline in biodiversity in the great barrier reef
increased drought in areas
the difference between natural and enhanced climate change
natural climate change is the greenhouse gases which occur naturally in the atmosphere. enhanced is the additional gases brought about the man by burning
what is mitigation
means to avoid the effects of climate change
2 methods of mitigation
using renewable energy
carbon capture
define adaptation
this means living with climate change but finding new ways to do this
2 methods of adaption
changing farming farming methods to deal with more extreme weather
constructing barriers
how can sunspot activity have an effect on global climates
when sun spot activity is at a maximum the sun gives off more heat
when the sun spot is at a minimum, the solar output is reduced
describe how water supply can be managed (use a case study from different parts of the world)
developing better irrigation methods for crops. the gambia water harvesting techniques take water from underground wells and sparingly used on crops
desalination plants to extract salt from water and make it safe for drinking.
diverting water in artificial canals from glaciers in the himalayas ensures villages have regular fresh water.
the milankovitch cycles
eccentricity- the earths orbit is not fixed and changes from circular to mildly elliptical every 100 000 years
axial tilt- the axis of the earth changes dramatically every 41 000 years
precession - the earths wobble accounts for certain regions of the world.
