2.4 climate change

Cards (14)

what is a glacial period
cold periods of earths history when polar ice sheets have reached further south
what is an interglacial period
warm periods of the earths history when polar ice retreated
what is the natural greenhouse effect
natural processes that heat the earths surface
what is the enhanced greenhouse effect
the increase in the strength of the natural greenhouse effect
what are greenhouse gasses
gases in the atmosphere that trap in heat from the sun
what are some natural causes of global warming
orbital change
sunspot theory
eruption theory
asteroid collisions
what are some human causes of global warming
carbon sinks
use of fossil fuels
agriculture
population growth
how are ice cores used as evidence of climate change
each layer is one year of snow fall- thin= warmer thick =colder
how are tree rings used as evidence for climate change
each tree ring represents a year of growth,
thin=colder
thick=wamer
how are paintings used as evidence of climate change
paintings of scenes they could see in the past
how are photos used as evidence for climate change
give an idea of the general trend
how can ecosystems in the arctic be affected
habitats are lost
polar bears can't survive
how can water supply and health in africa be affected
less crop production
infection will increase
how is water supply and health in australia affected
sea levels rise
heat wave related deaths rise