geography Flashcards
hazardous earth
what is the name for a cooling period in earths history?
glacial period
what are the four natural causes of climate change?
industry, transport, agriculture and energy
how has the volcanic activity impacted upon the earths climate in the past?
can cause green house gases to rise into the air heating up the climate
what are three pieces evidence for natural climate change?
volcanic activity, asteroid collisions, orbital theory
how do historical records provide evidence of past climate change?
tree rings, ice core analysis, paintings and diary
what is the green house gas effect?
potentially harmful gases that trap heat in the earths atmospher
give an example of a greenhouse gas
methane, CO2 and CH4
name at least three human activities that produce greenhouse gases and enhance the greenhouse gas effect
agriculture, industry, transport
what are the two reasons for global sea level rise?
polar ice caps are melting, thermal expansion as water particles are heating up
what are the three pieces of evidence for human-induced climate change?
global average temperatures, global carbon dioxide levels and sea level change
identify at least three possible consequences of climate change.
sea levels rising, ice caps melting, natural disasters
why is it difficult to make projections for much sea levels could rise by?
as we don’t know how much the population will grow by because of the pressure its putting on our planet
what are the four major layers of the earth’s structure?
crust, mantle, outer core, inner core
which layer is the thickest?
mantle
which two layers are entirely solid?
crust and inner core
