geography-climate change

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what is the ice age?
the the majority of the earths water is stored in glaciers as ice.
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what is sustainable development?
development which meet the needs of the present without compromising the ability of future generations to meet their own needs
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in the uk what four key sustainable areas have been identified?
climate change and energy,natural resources,sustainable communities and sustainable consumption and production
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how has a change in atmospheric gases changed the worlds climate since the last ice age?
co2-one of most important bases responsible for greenhouse effect.the GE keeps heat within earths atmosphere by absorbing long wave radiation. without greenhouse effect the average global temp would be -18'.
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how has volcanic activity made a change in the worlds climate since the last ice age?
Volcanic eruptions release sulphur dioxide+ash into atmosphere.-act as a cloak+reduce amount of solar energy reaching the earths surface.Yr after an eruption, cold around world and heavy snowfalls+frost in summer.
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how has solar output changed the worlds climate since the last ice age?
-energy that comes from sun. measurements show amount of solar energy reaching the earth has decreased by 0.1%.activity of sunspots on suns surface affects solar output. reduced sunspot activity is thought to be one cause of the little ice age.
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how has orbital geometry changed the worlds climate since the last ice age?
many conflicting views on what happens ti temps as earths orbit shape changes, cold periods seem to have occurred when earths orbit is circular+warmer periods when it is more elliptical.
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what is a fossil fuel?
a fuel that is made from the remains of creatures and vegetation which have decomposed in the earths surface for example oil and coal.
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how fossil fuels been a cause of current climate change
Been an increase in burning to produce energy in countries like china,where 75% of energy is produced from coal.Increase in global car ownership so more oil used which in turn increases amount of co2 in atmosphere.drilling for oil releases methane in
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how has methane gas been a cause of current climate change
risen 1.5% a year for the past decade.-been an increase in bacteria emissions from wetlands bc of rising temps. Increase in growing of rice bc of growing population in rice producing countries.Increase in number of cattle for meat defecting an increa
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name 3 negative effects of climate change
crop yields-if temps still rise it will effect food production.Sea levels+marine environments-if sea levels rise still then many areas will flood.Gaciers-if temps still rise glaciers will melt at a faster rate.
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give an example of where the crop yields effect is happening
Tanzania is experiencing longer periods of drought. farmers will loose almost a third of their maize crop.
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give an example of where the sea levels and marine environments effect is happening
sea levels rising will threaten large areas of low lying coastal land including major world cites like london.
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give an example of where glaciers effect is happening
in the Antarctic 90% of the glaciers are retreating.
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describes peoples attitudes to climate change
some deny it is happening while others accept but don't believe its being caused by humans. don't know if having more cars make a difference.do cows really emit that much methane. sea levels rising can't be allowed to continue bc cities like London a
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finished:)x
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what is sustainable development?

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development which meet the needs of the present without compromising the ability of future generations to meet their own needs

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in the uk what four key sustainable areas have been identified?

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Card 4

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how has a change in atmospheric gases changed the worlds climate since the last ice age?

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Card 5

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how has volcanic activity made a change in the worlds climate since the last ice age?

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