,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
1°
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 .
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
1°
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 .
