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22 Cards in this Set
- Front
- Back
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greenhouse gas
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warming of the lower atmosphere when CO2, methane and other gases trap infrared (IR) emitted by objects on earth
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Biomes
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terrestrial ecosystems that cover large geographic areas and share similar climates.
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biomagnification
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?
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IPCC
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Intergovernmental Panel on Climate Change - convened in 1998 by United Nations to collect and analyze very best scient. info about global climate, make recommendations
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deforestation
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Subsistence farming/firewood – in slash and burn agriculture, ash tilled into soil
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anthropogenic
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?
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Kyoto Agreement
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1997, binding pledge to reduce greenhouse emissions below 1990 levels by 2012 (took effect in 2/05)
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methane
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is a much smaller contributor than CO2, but traps 20x as much IR
(DOE) |
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biodiversity
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?
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terrestrial
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availability of freshwater
temperature dominate plant species |
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How is infrared radiation related to the greenhouse effect?
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it creates the greenhouse effect by trapping the gases in the lower atmosphere
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What factors are currently leading to an increased concentration of CO2 in the atmosphere?
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Dissolving CO2 levels in bodies of water
CO2 in atmosphere C in limestone and other rocks C in fossil fuels and other remains of living things. C in now living things |
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What are the largest and second largest reasons fossil fuels are burned?
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Transportation
and deforestation |
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What factors are leading to increased methane in the atmosphere?
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due to agriculture
rice product cattle cattle farts :) |
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Why is tropical deforestation acting as a “double whammy” in contributing to the greenhouse effect?
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CO 2 released in the burning
creates less tree to take in the CO2 |
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What are the evidences for global warming?
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40% rise in CO2 since 1850
increase 1 degree C every century global air temp rising loss of ice covering |
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What is the IPCC, the Kyoto agreement?
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Is an agreement to help cut the world increase in global warming.
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What percentage of the world’s CO2 emissions are produced by the US?
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25% worlds CO2 emissions
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How do we know that global warming is not just part of earth's precessional cycle?
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These changes are occurring in decades, not millenia
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Give examples of some of the ways carbon compounds are exchanged between the different reservoirs on the earth
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Earth is a closed system w/respect to minerals – inputs and outputs minimal, minerals have to be recycled
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Describe tropical rain forest in terms of its temperature, soil, geographic location rainfall and biodiversity.
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Soil very nutrient poor,
little sun reaches forest floor, almost all animals live in the canopy |
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For what reasons is tropical forest cut down, and what effects does this lead to?
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Subsistence farming/firewood – in slash and burn agriculture, ash tilled into soil
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