4.3 Flashcards
Greenhouse gases
gases in the earths atmosphere that trap heat
Greenhouse effect
a process that occurs when gases in earths atmosphere trap the suns heat
positive feedback loop
when product of reaction leads to increase in that reaction
example of positive feedback loop?
the relationship between global warming and increased amounts of water vapor in the atmosphere.
negative feedback loop
when product if reaction leads to decrease in that reaction
example of negative feedback loop?
example of negative feedback loop
what do greenhouse gases do?
they absorb suns heat that radiate from earths surface trap it in atmosphere heating up earth
why is the greenhouse effect important?
without it our planet would be too cold
how have humans effected greenhouse effect?
burning fossil fuels, cuttindg down forests, farming livestock
what do ice cores show?
they show how temps have rised and dropped over many many years.
