Water and the water cycle Flashcards
1
Q
How much of earths surface is covered by water?
A
96.5%
2
Q
What does the hydrosphere consist of?
A
the earths water including surface water, groundwater, and liquid water in the atmosphere.
3
Q
what happens to the structure of water molecules when frozen?
A
The solid form is less dense than the liquid so it expands
4
Q
What is heat capacity?
A
a measure of the amount of heat that must be added to a material to change its temperature
5
Q
What is a hydrogen bond?
A
the attraction of hydrogen atom to a negatively charged atom or molecule
6
Q
what are the three primary reservoirs of water in the hydrosphere?
A
The oceans, glaciers/ice caps, groundwater.
7
Q
what is the average residence time in oceans rivers lakes and the atmosphere?
A
Rivers - days Atmosphere-13 days Lakes-1.2 years Groundwater-143 years Ocean-3200 years
