hydrological cycle processes local to global

• what does hidden water mean?


  indirect ways everyone uses water e.g cereal
• how many tonnes of ice does Greenland lose every hour?


  30 million tonnes
• what does it mean that the global water system is a closed system?


  no water is gained or lost

  water moves between reservoirs but the total mass is the same
• water stores and their residents time


  oceans -> 3,600 years

  ice caps -> 15,000 years

  ground water -> 10,000 years

  river and lakes -> 2 weeks to 10 years

  soil moisture -> 2 to 50 weeks

  atmospheric moisture -> 10 days
• what is waters three states?


  solid (ice), liquid (water), and gas (water vapor)
• water is liquid 98% of the time, mainly in oceans
• how can we tell the planet had an ice age?


  wave cut platforms and flooded rivers (ports)

  sea level was 140 meters lower
• what does blue water mean?


  water stores in lakes, rivers, streams, and ground water (visible)
• what does green water mean?


  water stores in the soil and vegetation (invisible)
• what does advection mean?


  transfer of heat by flow of fluid