Did you know -
- A nearly fixed amount of water circulates around the Earth.
- Water moves from one place (reservoir) to another by certain pathways.
- Some processes of transfer are rapid while others are very slow.
- A conceptual "reservoir" of water is not the same thing as a reservoir in which water is stored.
- When land-based glacial ice melts and runs off into the sea, sea level rises.
- When land-based glacial ice forms, sea level drops.
- When floating icebergs melt into the sea, sea level doesn't change.
- Very large icebergs originate from land-based glaciers that break off and fall into the sea, they don't generally form in the ocean.
- Glacial ice is made up of freshwater that mostly falls as snow.
- Evaporation of seawater requires an input of energy, while the converse condensation of clouds releases energy.
© 2007-2012 Earthguide at Scripps Institution of Oceanography.
All rights reserved.
Updated: April 16, 2012