The Water Cycle

The Water Cycle
eW/FS/WE/001
Water cycle
cycleRain
All water in nature is part of the water
cycle.
A cycle is like a circle.
The difference between a circle and a cycle is
movement. (Indicated by arrows.)
In a cycle there is movement.
wind
condensation
rain
evaporation
Water evaporates up from the sea.
The water vapour condensate into clouds and
the wind blows the clouds over the land.
The clouds rain down to the earth.
The rivers flow back to the sea.
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eW/FS/WE/001
Water cycle
cycleRain
Teacher demonstration
Throw a ball up into the air.
Ask the learners what they see.
Point in all the directions that they talk about.
Explain that the everything that goes
up, must come down.
Look at this picture.
wind
condensation
Cut out these arrows and
arrange them in the
correct order to form a
circle:
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rain
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evaporation
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Condensation
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Condensation
New words:
The gas that forms during
evaporation is called
water vapour.
We cannot see water
vapour.
Water vapour consists of
water molecules.
A water molecule consists
of two parts water and
one parts oxygen.
Water molecule
As the water vapour moves
water
upward, the air cools and
the water molecules forms
water droplets.
We can then see it as a cloud.
We can also see condensation as:
mist
or fog.
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oxygen
water
oxygen
water
eW/FS/WE/001
Condensation
Select the correct answer:
With what letter does the
word condensation start?
With what letter does the
word condensation end?
During condensation, water
changes from as gas to a …
c
e
d
n
o
e
e
t
n
p
v
e
______________
liquid
We see condensation in nature as a
Solid
Experiment for Teacher:
Boil water in a kettle. Hold the child’s hand high
over the spout and slowly lower it, so that they
can feel the dampness of the water vapour.
Hold a cold glass upside down over the spout.
Show them the condensation drops on the inside.
Please make sure that they understand that this
experiment can be done by a teacher only.
Practice the new word and write them on the
board. Let them practice the syllables, by
clapping at each break.
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Evaporation
eW/FS/WE/001
Evaporation
The sun
Evaporation takes place from the water in the…
sea
dams
plants
rivers
lakes
During evaporation, water changes from liquid to
gas.
We can see water, but when the water
evaporates, we cannot see the gas.
We can see water as a liquid, but not as a gas.
The water from plants evaporates through their
leaves.
Evaporation takes place in an
upward direction, away from
the earth.
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eW/FS/WE/001
Evaporation
The sun
Select the correct answer:
With what letter does the
word evaporation start?
With what letter does the
word evaporation end?
In what direction does
evaporation take place?
During evaporation, water
changes from liquid to …?
Can evaporation take
place without the sun?
v
e
p
n
e
t
v
e
p
v
e
gas
e
n
solid
yes
no
Experiment for Teacher:
Put a wet facecloth in front of a heater. Watch how
the water evaporates into water vapour. Explain
that the heater can be compared to the sun as a
source of heat. The wet facecloth can be compared
to a water source on earth. Notice that the water
vapour goes in an upward direction.
Write the new words on the board, practice
syllables by clapping the breaks.
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eW/FS/WE/001
Water cycle
cycleRain
All water in nature is part of the water
cycle.
A cycle is like a circle.
The difference between a circle and a cycle is
movement. (Indicated by arrows.)
In a cycle there is movement.
wind
condensation
rain
evaporation
Water evaporates up from the sea.
The water vapour condensate into clouds and
the wind blows the clouds over the land.
The clouds rain down to the earth.
The rivers flow back to the sea.
www.ewisa.co.za
Contact: [email protected] or [email protected]
www.ewater.co.za www.waterinfo.co.za www.waterinformation.co.za
AAi
eW/FS/WE/001
Water cycle
cycleRain
Teacher demonstration
Throw a ball up into the air.
Ask the learners what they see.
Point in all the directions that they talk about.
Explain that the everything that goes
up, must come down.
Look at this picture.
wind
condensation
Cut out these arrows and
arrange them in the
correct order to form a
circle:
www.ewisa.co.za
rain
Contact: [email protected] or [email protected]
www.ewater.co.za www.waterinfo.co.za www.waterinformation.co.za
evaporation
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Rain
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Rain
When the clouds draw
together, they become
heavy.
When they are too heavy, the
raindrops fall from them.
Rain falls towards the earth, in a
downward direction.
The rain rain drops join each other
and form little streams.
The streams run together
and join into rivers.
The rivers are sometimes
dammed and the water
ends up in the dams.
The rivers run into lakes
and the sea.
River
Lake
Beach
Sea
Some rainwater penetrates the soil as ground
water and joins in the aquifer, which drains into
lakes or the sea.
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Rain
How many clouds are
there in this block?
Count the number of
rain drops that are
falling from the
cloud. Write the
number in this block.
What is half of this
number?
In which direction do
the rain drops fall?
What do rain drops
feel like?
If two equally
wide rivers join
together, how
will the new
river’s volume
change?
wet
dry
greasy
half
double
triple
When rainwater penetrates the soil, we call
it___________ water.
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The Sun
eW/FS/WE/001
The sun
The sun provides light, so
that we can see.
The sun provides heat, so
that we can be warm.
The sun is a source of
energy.
The sun shines every day, even when we cannot
see it.
Some days the clouds gather
between us and the sun, so we
cannot see the sun.
During the day the sun heats the earth.
The heat of the sun makes the air
around the earth warmer and
drier.
The water on the earth is
evaporated by the sun’s heat.
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eW/FS/WE/001
The sun
Select the correct answer:
What shape is the sun?
What colour is the sun?
Pink
Yellow
Green
What does the sun do?
What do you wear when
the sun is shining?
Does the sun make
you thirsty?
yes
no
Do you think the
plants get thirsty too?
yes
no
Calender Task
Monday
Tuesday
Wednesday Thursday
Friday
Each day of the week you look at the weather. If
you can see the sun, draw one in the block
marked with the day’s name. Count the number
of days that the sun has shone in one week.
Write that number in this block.
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