click below
click below
Normal Size Small Size show me how
Ch. 33 vocab
vocabulary words for chapter 33
Term | Definition |
---|---|
aquifer | zone of water-bearing rock through which groundwater can flow |
continental margin | transition zone between dry land and the ocean bottom |
glacier | large mass of dense ice formed from snow |
groundwater | water that resides in a saturated zone |
ocean basin | vast depression on Earth's surface underlain by ocean crust and filled with ocean water |
permeability | ease with which fluid can flow through rock |
porosity | proportion of rock that consists of pore spaces |
reservoir | location where water or other material that transfers from place to place in a cyclical manner is stored |
residence time | average length of time that any given atom will stay in a particular reservoir, such as the ocean or atmosphere |
runoff | precipitation that is not absorbed by the ground or evaporated and that runs over Earth's surface |
3% | percentage of Earth's water that is fresh |
97.9% | percentage of salt water in oceans |
0.49% | percentage of salt water in groundwater |
1.9% | percentage of salt water in ice caps and glaciers |
0.019% | percentage of salt water in surface water |
0.001% | percentage of salt water in the atmosphere |
0.00004% | percentage of salt water in the biosphere |
Sun | gives water the energy it needs to evaporate |
gravity | supplies the force that pulls water back to Earth's surface |