- Hello! - Hello!
- Where is Eric?
- We have to wait.
He will come from here in an hour.
- An hour?
- Yes!
- Patience.
- But we don't have a clock!
- Yes! A water clock.
- Tick, tock... - Tick, tock...
- How nice!
- Yes!
- Over there.
- Look! It's Eric!
In times of war,
hunger and poverty
prices went up,
and families couldn't buy
because their pockets were empty.
Well, it turns out
that one day
a girl wandering through the village
noticed her stomach
growling with hunger.
At her home, there was nothing to eat
nothing was left.
She was a positive
and intelligent girl.
And seeking a solution
to her hunger,
she suddenly saw a pot
lying on the ground.
And she had a brilliant idea.
She picked it up and went to the river.
She filled the pot with fresh water.
And with some dry branches,
she made a fire.
She lit the fire,
and while waiting for the water to boil,
she glanced around
in case someone appeared.
Some children looked at her from afar,
thinking, "What a strange girl!"
while she used her hand to clean
some stones she picked up
and threw them into the pot.
The children, more curious than hungry,
came up and asked her
why she was doing something so strange.
- Stone soup - she replied.
- Stone soup?
- But have you lost your mind?
- You don't know how good it is!
But now the children
were more hungry than curious.
Everyone was hungry.
The food they were given at home
was not enough.
- What are you doing?
- Stone soup.
- I want some. - Me too! \- I'm hungry!
- Can we try it?
- Not yet.
- But it's very tasty.
- Although it would be better
with a pinch of salt.
- I have salt.
- Wait! I'll be right back.
The boy went home
and came back with some salt.
- Much better!
Although it would be better
if it had tomatoes.
And they brought tomatoes.
- It would be even more delicious
if it had lettuce.
- And celery!
And they brought celery.
- And carrots!
And chicken!
And potatoes!
And rice!
And bell pepper!
And everything each one
could bring.
- Carrots!
- At home, I have eggs!
- And I have chicken!
- And I have potatoes!
- Let's see now?
We got it!
The best stone soup
they had ever tasted.
The smell confirmed it.
- Go home for a plate and spoon
because there is soup for everyone
and sharing is the most delicious thing.
They lined up
in front of the person distributing the soup.
How delicious it was!
And what a clever girl.
And what a good lesson they had learned:
By sharing what little each one had,
they made a delicious soup for everyone.
Today, we're going to talk
about the water cycle.
Water is important
for many reasons:
a quarter of the Earth
is land,
and the other 3 parts are water,
meaning seas,
clouds,
rivers,
lakes,
wells,
polar glaciers...
And not only sea turtles
fish, algae and sharks
need water
Don't we need it?
Of course, we do; plants
animals and humans
also need water to live.
Without water
life on the planet would be impossible.
In nature, there are two types
of water:
fresh, in rivers, lakes and wells,
and salt water in the seas and oceans.
We find water in three states:
solid,
liquid
and gas.
These are the three states of water.
Solid like ice in a glass
or on a frozen lake for skating.
Liquid
like pool water good for swimming.
And gas
like the steam from a shower.
I'm sure you've drawn on foggy windows before!
The water cycle
is the continuous movement
of water on Earth.
Water moves ceaselessly
in a cycle.
It starts with
the evaporation of water
from oceans, rivers and lakes
thanks to heat from the Sun.
This is called evaporation.
And this is its symbol.
Water evaporates
and becomes vapor,
which rises into the air.
It accumulates in the atmosphere.
If we leave a glass of water
outside in the Sun,
it will almost have disappeared
the next day...
...but no one has drunk it!
The Sun has evaporated it!
The same happens
with the clothes we hang outside
which are dry the next day,
due to the evaporation of the heat
caused by the Sun.
Also, the water
that we boil in a pot,
forms vapour
that condenses on the wall.
Vapour also comes out of the water
from the surface of plants.
This is transpiration.
But it is impossible
to see vapour in the air.
And surely you have seen
how the flow of a river
reduces.
This is due to evaporation.
The vapour that rises due to heat
into the atmosphere cools
and condenses,
forming clouds.
Clouds
can have different shapes
and colours,
depending on the temperature
and the amount of vapour
they contain...
As clouds accumulate vapour,
drops form due to weight
and fall as rain.
This is precipitation.
The falling rain,
if the temperature drops
turns into snow.
And if the temperature drops
even more,
it turns into hail.
The water that falls
to the surface of the Earth
fills oceans,
rivers and lakes.
When it seeps under the ground,
this is called infiltration.
Underground, water accumulates
from rain and rivers
in aquifers or wells.
In the water cycle,
we can differentiate
three stages.
The first is
evaporation.
The second is
condensation.
The third is
precipitation.
It is a cycle
that is always moving.
From evaporation
to condensation
and then precipitation.
It goes from one phase to another
in an endless loop.
It never stops.
It is a continuous movement.
The water cycle is essential
to keep the air clean,
free from suspended particles.
It provides fresh water to drink,
and water for showering
or washing clothes.
It cleans animals and
provides them with water.
It is also important for agriculture,
as plants need water
to grow and produce food.
The water cycle is essential.
Aside from keeping the air clean,
it helps keep
the climate balanced,
providing stability,
as suspended particles
and the heat from the Sun
would cause strong temperature changes otherwise.
Apart from the natural water cycle,
there is an urban water cycle
that makes our lives easier.
Tap water comes out clean.
We can drink it.
We can brush
our teeth, wash our clothes...
We can clean things with it.
And we call it potable.
When you see a fountain
that says "non-potable,"
you can wash your hands
but you can't drink it.
It could contain bacteria!
Water comes to homes
through pipes
from very large tanks
where water from rivers arrives
and is filtered to reach
houses in the city.
It's the water treatment plant.
The dirty water from the shower
goes to the sewers,
also when we go to the bathroom
and flush the toilet,
or when we wash clothes.
This dirty water
doesn't go directly to the sea.
It goes to treatment plants
that filter it
and take it back to the sea.
If we didn't treat it
and took the wastewater
to the sea,
then
the fish would die.
For all these reasons,
water is very important.
Water allows us
to live, us humans,
animals too,
plants,
and the Earth.
Without water,
life would be impossible.
That's why we must take care of it
and never waste it.
Some tips to do so
at home are
close the tap tightly
after every use.
Don't leave the water on
while brushing your teeth,
but turn it off until
you've finished brushing
and turn it on only when you need to rinse.
And instead of taking a bath,
it's better to take a quick shower.
But don't waste time
singing or daydreaming.
Just wash and get out.
And the leftover water
from washing vegetables
can be used
to water the plants.