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Summary IB Environmental Systems and Societies (ESS) - Topic 4. Water And Aquatic Food Production Systems And Societies $3.31   Add to cart

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Summary IB Environmental Systems and Societies (ESS) - Topic 4. Water And Aquatic Food Production Systems And Societies

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The following document contains summarised notes taken on Topic 4. Water and aquatic food production systems and societies This includes: 4.1 Introduction to water systems, 4.2 Access to fresh water, 4.3 Aquatic food production systems and 4.4 Water pollution. The use of colourful images, graphs, c...

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  • Topic 4. water and aquatic food production systems and societies
  • October 25, 2021
  • 26
  • 2021/2022
  • Summary
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,4. Water and aquatic food production systems and societies


4.1 The hydrological cycle
The hydrological cycle : the movement of water in the
planet

storages : Oceans ,
surface waters , ice
caps ,
water
vapour ,
aquifers

Flows :




Transformation Transfer
has
precipitation





now
percolation
'



or r
g

µ{%oÉÑ ¥4s
,
'



absorption
L

Egg ,


footing
'




%
freezing >

< melting
streamflow





Sun causes water from land and sea surfaces to evaporate .




Water transforms into
liquid vapour .



Through tothe process of
transpiration ,
water moves from the hoot the leaves and
It transforms it into Water condenses Into visible water vapour
.




vapour .




to form clouds .


They cool and become
heavy Precipitation occurs Other night
.
.




water the water vapour in the atmosphere is
'




can condense and

deposited as dew .
Vegetation will slow the movement of water and
infiltrate the water . Water will percolate into underground
aquifers .



Ground water will flow into the sea or into surface streams .

, 4.1.2 Ocean circulation
systems
for
The global conveyor belt :

responsible distributing heat
energy ,

which directly affects regional -
weather around the world .




the water the
Temperature the colder
:
more dense

salinity the greater the salinity the
:
more dense the water


cold water is dense .
In addition ,
when water freezes salt is left behind
.

,

Cold water and salt makes water even denser and sinks Cold .




water moves towards the
equator and warms The warmer .




the less dense and becomes surface water .




Surface waters move towards the Polar Regions , warming the

temperature → negative feedback loop
How does the
global conveyor
belt influence weather and climate ?


Specific heat capacity
:
amount of heat
energy that must be
absorbed or realeased for 1g of a substance to
change its temperature

by .




Water has a high specific heat capacity meaning that it takes
large amounts of energy to increase ocean temperatures Warm .




towards the poles Cold water
water moves
increasing the temperatures .




moves towards the equator water absorbs the heat and lowers
,




the
temperatures affecting the weather .

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