geography Flashcards
hazardous earth
what is the name given for a cooling period in earth’s history?
glacial period
what are the four natural causes of climate change?
Industry , transport , agriculture , energy
how has volcanic activity impacted upon the earth’s climate in the past?
warms up the climate which can cause greenhouse gases to rise into the atmosphere
what are three pieces of evidence for natural climate change?
volcanic activity , orbital theory , asteroid collisions
how do historical records provide evidence of past climate change?
tree rings , ice core analysis , historical records
what is the greenhouse affect?
potentially harmful gases that trap heat in the earth’s atmosphere
give an example of a greenhouse gas
methane , CO2 and CH4
what are the three pieces of evidence for human-induced climate change?
global average temperatures , global carbon dioxide levels and sea level change
name at least three human activities that produce greenhouse gases and enhance the greenhouse effect
agriculture , industry , transport
what are the two reasons for global sea level rise?
polar ice caps are melting and also thermal expansion water particles are heated up , they take up more space
identify at least three possible consequences of climate change
sea level rising , ice caps melting and natural disasters
why is it difficult to make projections for how much sea level could rise by?
as we don’t know how much the population will grow by because of the pressure it’s 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 the inner core
