water cycle, water on planet earth Flashcards
what is the hydrosphere?
water on or close to the earths surface
what is atmospheric water?
water found in the atmosphere mainly water vapour
what is cyrospheric water?
water that is locked up in earths surface as ice
what is oceanic water?
water contained in the earths oceans but not inland seas
what is terrestrial water?
three main types
ground water - strata
surface water - lakes
soil water - air spaces of soil
what could effect climate change?
changing amounts of atmospheric water
what percentage of the earths surface do oceans cover?
72%
hwat percentage of water do the oceans contain?
97%
what percentage of the oceans have been explored?
5%
what does the salts in oceans allow it to do?
stay as a liquid below zero degrees
why has the ph of oceans decreased?
due to increase in atmospheric carbon
what are the five forms of cryospheric water?
ice caps ice sheets alpine glaciers permafrost sea ice
what is sea ice/
formed from ocean water when temperature drops lower than zero
does sea ice raise sea level?
n
why doesn’t sea ice raise sea level?
because it forms from ocean water
what are ice shelves?
form when ice sheets and glaciers move out to sea
how are ice bergs formed?
chunks of ice that break off glaciers and ice shelves
do ice bergs change sea level?
only when they first leave land and push into the water but not when they melt