Flashcards
Climate and Change
Cards in this deck (22)
- 1Define climateThe average weather for a particular place over a certain period of time (a year)
- 2Explain briefly the past cycles of climatewarm and cold episodes, every 75,000 years, peaking then starting the cycle again
- 3What coincides (in terms of peaks and troughs) with carbon dioxide?temperature
- 4How has the temperature changed over the last few thousands of years?average temp now = 5 degrees, used to be 0 degrees, over the last 450,000 years the temp range is becoming more extreme
- 5How many ice ages have occurred since 450BC? How have they changed?3, they have become colder
- 64 reasons why Vikings left GreenlandIncreasingly colder...food and livestock was becoming more scarce...ate all the livestock (including new-born)...rest of population died of freezing cold
- 7What is an extreme climate?Extremely hot/cold. Temp and rainfall conditions in these places limit flora and fauna
- 8Why do extreme climates have a low carrying capacity?Growing seasons are short...crop conditions are unsuitable for good growth
- 98 problems that may be experienced in extreme climatesLack of communication/facilities/materials/food...bad living conditions...poor transport networks...small pop...difficult to get clean water
- 105 human threats faced by extreme climatesPollution...tourism...civil war...habitat loss (pollution, deforestation)...climate change (pollution)
- 115 physical threats faced by extreme climatesPermafrost melting...desertification...climate change...drought...habitat loss (ice melting, natural disaster)
- 12Proportions of greenhouse gases:Water vapour (36-72%), CO2 (9-26%), methane (4-9%), nitrous oxide, ozone (3-7%0, CFCs
- 13Recent evidence to show global warming-Lower number of oxygen (18) isotopes found in newer ice - water climate
- 14Future (best) prediction for global warmingStorms & hurricanes, species becoming extinct, global temps shouldn't exceed 2 degrees, high latitudes warming up could encourage tree growth & greater biodiversity
- 15Future (worst) prediction for global warmingAs ice melts, less white surface to reflect heat, world heats quicker...a 6 degree rise...billions will lose their homes
- 16Future (best) prediction for sea level risingWorld sea level rise of nearly 1 metre
- 17Future (worst) prediction for sea level risingIf all of Antarctica melts, world sea levels could rise by 65-70m...earth could be ice free...billions will lose homes
- 18Local threats to extreme climate environmentsDrought...famine...tourism...migration...land use changes...pop growth...political problems...flooding
- 19Global threats to extreme climate environmentsGlobal warming...sea level rising...pollution...use of fossil fuels...ice breakage/melt
- 205 local solutions to reduce these threatsSolar panels in American deserts, Australia & Middle East...renewable energy (geothermal energy) in polar regions...wind turbines...hydro-electric dam...recycling schemes
- 213 global solutions to reduce these threatsAntarctic treaty (stops development) 1961...International year of the desert and desertification 2006-raising awareness about resource consumption...Kyoto Protocol, countries agree to cut co2 emissions by 20% by 2015
- 22Which countries have and haven't achieved the Kyoto Protocol?Have-Sweden/Finland...Haven't-China/U.S
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- GCSE Geography (Climate & Change) Flashcards on Climate and Change, created by Anna Hollywood on 25/03/2014.
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- Anna Hollywood
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