Presentation on chemistry the importance of water in human life. Presentation on the topic: "The role of water in human life! Water is life. Most people in the modern world think little about water until they have enough of it. In the West, even those who.". Download free and without re

Water is life Most people in modern world they think little of water as long as they have enough of it. In the West, even those who think about it usually just wonder about the quality of municipal water supplies, or perhaps see it as a product that should probably be consumed more. Most people in today's world think little about water as long as they have enough of it. In the West, even those who think about it usually just wonder about the quality of municipal water supplies, or perhaps see it as a product that should probably be consumed more. We dutifully watch as millions of dollars are spent every year to convince us to drink animal milk. And it hardly occurs to us to wonder why no one spends money on discussing plain old good water. What for? It cannot be that such a familiar thing as water has such importance. We dutifully watch as millions of dollars are spent every year to convince us to drink animal milk. And it hardly occurs to us to wonder why no one spends money on discussing plain old good water. What for? It cannot be that such a familiar thing as water has such importance.

Importance of water in human life Water is useful in everything: cooking, washing, cleaning, washing and for the production of various products. Water is useful in everything: cooking, washing, cleaning, washing and for the production of various products. The role of water in maintaining health is very important, as constant dehydration of the body leads to a large number of diseases. The role of water in maintaining health is very important, as constant dehydration of the body leads to a large number of diseases. Everyone knows the meaning of water, if there is no water in our body, there will be no us. However, we still get sick. Everyone knows the meaning of water, if there is no water in our body, there will be no us. However, we still get sick.

The water cycle in nature The water cycle in nature (hydrological cycle) is the process of cyclic movement of water in the terrestrial biosphere. Consists of evaporation, condensation and precipitation. The water cycle in nature (hydrological cycle) is the process of cyclic movement of water in the earth's biosphere. Consists of evaporation, condensation and precipitation. The seas lose more water due to evaporation than they receive with precipitation, on land the situation is reversed. Water circulates continuously the globe, while its total number remains unchanged. The seas lose more water due to evaporation than they receive with precipitation, on land the situation is reversed. Water continuously circulates around the globe, while its total amount remains unchanged. On earth, water exists in three states of aggregation: liquid, solid and gaseous. Living organisms cannot exist without water. In any organism, water is the medium in which chemical reactions without which living organisms cannot live. Water is the most valuable and most necessary substance for the life of living organisms. On earth, water exists in three states of aggregation: liquid, solid and gaseous. Living organisms cannot exist without water. In any organism, water is the medium in which chemical reactions take place, without which living organisms cannot live. Water is the most valuable and most necessary substance for the life of living organisms.

Stories. Until the middle of the 18th century, water was considered an indivisible substance. And only in 1783, the French chemist Antoine Laurent Lavoisier came to the conclusion that water has a complex structure: it consists of hydrogen and oxygen. After that, for over a hundred years, everyone believed that water is a compound described by the only possible formula H 2 O.

Water, you have no taste, no color, no smell. You cannot be described, you are enjoyed without knowing what you are! It cannot be said that you are necessary for life: you are life itself. You are the greatest wealth in the world. Antoine de Saint-Exupery

Water, whatever its composition, has a different effect on human health. Every kind of water is different features appearance. Water is life, and like life it has many faces.

Water is also a kind of indicator of aging. The body of a child from birth to one year of age contains 80-85% water. Upon reaching the age of 18, the water content decreases to 65 - 70%, and in old age - up to 25%.

Even today, scientists continue to make discoveries. For example, today the theory about the information memory of water has been proven - the properties of water to perceive and transmit negative or positive information about the matter with which it has previously been in contact.

The importance of water. For human body Water is the second most important substance after oxygen. Water regulates body temperature, humidifies the air during breathing, ensures the delivery of nutrients and oxygen to all cells of the body, protects and buffers vital organs, helps convert food into energy, removes toxins and waste products of life processes. It is no coincidence that a person can live without food for more than 4 weeks, and without water - no more than 7 days.

Have you heard of water?

They say it's everywhere!

In a puddle, in the sea, in the ocean

And at the faucet.

We are used to the fact that water -

Our companion always!

We can't wash without it.

Don't eat, don't drink.

I dare to tell you:

We can't live without her!

water under the microscope

The human body is "filled with water". For example, in

the body of a person weighing 70 kg of water is 49 kg.

“Drink” is one of the first words people pronounce,

barely learn to speak. "Drink" - the child asks,

addressing the mother.

With the advent of water comes life. The water is gone and

life becomes impossible. Because water is

elixir of life. Having given people water, nature has given us

priceless wealth.

Almost all living things on earth cannot live without water.

Animal trails in the forest lead to a watering place. The birds are flying

to rivers and lakes.

People have long chosen a place for themselves near the water, sat-

lis along the banks of rivers, lakes, where there is plenty of drinking.

Every tree, every blade of grass greedily drinks water.

Look how the grass starts to turn green after each

rain and how it turns yellow, and then withers and dies in a drought,

when there is no water.

You can't grow wheat or cotton without water.

Apple trees and pears will die if a person does not

water their roots.

Imagine that the seas and rivers have dried up to the bottom, and that's all

the treasure that the sea hid from man appeared

in front of you. chests of gold, gems, the money of those times - everything belongs to you. But there's not a drop around fresh water, and all the gold in the world is not needed -

but to you. A glass of ordinary water will become dearer to you than the untold riches of the whole world.

For thousands of years, grain can lie in dry ground. But

water will come and the grain will sprout. lifeless and

desert steppes are terrible. But it's worth holding the water -

and they turn into a blooming garden.

Water is all around us. Here is the cloud. Soon it too

it will rain. And a white star - a snowflake -

also water. Sculpt from snow, as if from clay, funny

snowman, house or fortress.

What is a hailstone? Yes, it's the same raindrop

frozen in height. But another, weighing half a kilogram,

don't call it that. It contains a thousand drops at once.

The ice of the rink, on which it is so pleasant to slide on a horse

kah, also from frozen water.

What is bubbling in the kettle standing on the stove, running away

away from the spout with a hot stream of steam? Yes, even za-

makes it fun to dance the lid. Yes, of course,

it is water, only water turned into steam.

Very good-natured, but when I want,

I am soft, obedient, I will even exude a stone.

water

He makes noise in the field and in the garden,

But he won't get into the house.

And I'm not going anywhere

As long as he goes.

rain

In the morning the beads sparkled

All the grass was tucked in.

And let's go look for them during the day

Searching, searching, not finding.

dew

There's a commotion in the yard

Peas are falling from the sky.

Nina ate six peas,

She now has angina.

hail

Runs in summer and sleeps in winter.

Spring has come and gone again.

river

He is fluffy, silver,

white, white,

Clean, clean

Cotton wool lay down on the ground.

snow

The fire does not burn Pisces live warmly in the winter:

And it doesn't sink in water. The roof is thick glass.

I walk in the field, I fly in the wild.

I twist, I grumble, I don’t want to know anyone.

I run along the houses

I'm making snowdrifts.

blizzard

The star of the village circled and melted

A little bit in the air, On my palm.

snowflake

What a miracle - beauty! Show up on the way!

Painted gates Do not enter them, do not enter.

rainbow

I am related to Moidodyr.

Open, open me.

And cold water

I'll wash you alive!

water faucet

It grows upside down

It does not grow in summer, but in winter.

But the sun will bake it -

She will cry and die.

icicle

Village in white velvet - And how the wind will attack,

And fences and trees. This velvet will fall.

frost

1 . The water is transparent.

5. When heated water

expands.

2. Water is colorless.

3. Water has no smell.

6.Water cooling

shrinks.

4. Water is a solvent.

especially to small children. In production

this water is first purified almost to the state

distilled and then artificially mineralized

health.

water are made soft drinks.

It's not water, it's medicine! It contains more

1500 mg of salts per liter. Like any medicine, prescribe

only a doctor can do it.

This water cannot be used for cooking. It may contain

keep from 500-1500 mg of salts per liter. drink this

water is possible only alternating with the dining room or after

doctor's advice.

If your hands are in wax,

If there are blots on the nose,

Who then is our first friend?

Will it remove dirt from the face and hands?

What Mom Can't Do Without

No cooking, no washing

Without which we will say directly -

Man to die!

To make it rain from the sky

To grow ears of bread

For ships to sail

To cook kissels

So that there is no trouble -

We cannot live without...

Water runs, flows As to a great value.

And straight to your house. When water flows in vain,

It must be treated, Close the faucet, otherwise it's trouble!

Turn off the faucet while you brush your teeth.

Turn off the water when working in the kitchen

or talk on the phone.

Do not wash dishes under running water. Better to wash

dishes in the sink by closing the hole with a stopper.

Replace the bath with a shower: when washing in the bathroom

150-180 liters of water are consumed, and under the shower

three times less.

I wash my hands, I wash my neck.

My ears and face.

Don't rush, don't rush.

It's so nice to be clean

Cleanliness is good!

Nose, wash up!

Wash right away

Both eyes!

Wash your ears

wash your neck,

Neck, wash yourself

good!

Wash, wash,

Get wet!

Mud, give up!

Dirty, wash off!

According to the norms, for every resident of the city comes-

220 liters of water per day.

Taking a shower for 5 minutes, you spend

about 100 liters of water.

Every time you

brush your teeth, you

use 1 liter

water.

Filling the bath only up to half, you spend

Have at least 150 liters of water.

Single flush in the toilet - 8 - 10 liters.

Every laundry

in the washing machine

requires over 100

liters of water.

Passes through a normal faucet

15 liters of water per minute.

Approximately 1000

liters of water per hour.

Do you understand how rich you are? Then learn

protect him . A threat hung over the water - pollution .

wastewater from factories

oil spills

garbage from ships

1 liter of wastewater destroys 100 liters of clean

water. The plant discharges 25 liters of waste in 1 minute.

5 grams of petroleum products are tightened with a film of 50

square meters of water surface.

Among the fields and forests, surrounded by herbs and shrubs

nicknames, the river flowed - clean and transparent. To the river

animals sewed to get drunk; children - to swim;

fishermen catch fish.

But one day the river became sad, because it became

multi-colored: gray, yellow, red, black ...

A small river is crying

Fear overcame the river.

The river became thin - thin,

Faded before the eyes.

The inhabitants of the river gathered together, and to know each other

can not.

- Neighbor, why are you so red?

- A factory was built on the bank of our river and led to

water two pipes. One takes clean water to the plant, and

the other pours dirty into it.

So I became from sewage

red.

Why are you as yellow as a lemon?

- I lived in shallow water: splashing

lass, played with her friends. But here

it was raining heavily. A stream from the shore brought a muddy stream. What

only it was not: fertilizers, and pesticides, and waste.

Our backwater turned yellow ...

- And you, girlfriend, why so purple?

• Would you see the burden that was on me? Banks, logs,

even wheels. Can it be sustained? From such pressure

I blushed, and turned blue, and turned green ... So it became purple

tovoy, barely - barely got out from under the garbage.

• Don't be scared, friends. I'm a fish just like you

only turned black from the oil that was transported along our

river. Oil covered the water with a thin film, there was nothing

breathe, nothing to eat, and ducks lie on the shore and die

rayut. Their wings are stuck together from oil.

People don't want to stay at home

People swim, ride, fly.

• Goodbye!
• We'll tell the neighbors
• Let's fly, swim and go!

At sea, in rivers and lakes

I swim agile, fast.

Among the warships

Known for its lightness.

boat

Steam locomotive without wheels!

This is such a miracle locomotive!

Hasn't he lost his mind?

Went straight to the sea!

steamer

scooped up the wind

white wing,

You and me to ride

Taken to sea.

sailboat

Even under polar ice

This house can float.

underwater

boat

People floated on logs

Even the oceans

On mighty, long, even,

Tied with vines.

The one who created the first raft,

Created the world's first fleet.

Along the wide rivers and blue lakes

All in the foam, a boat with a motor rushes by.

On oars and with a sail, how not to try,

There is no way to keep up with a motor boat.

Ocean in a gray mist, Fishing in the ocean

The waves are high, Young fishermen.

fishing trawler

This material will give children the opportunity to independently answer the following questions:
Without which there will be no life on earth?
Why doesn't water disappear?
Where is water contained, its states and conditions?
How does a person use water?

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Slides captions:

The role of water in human life

What happened to the flower? The flower withered without water!

Our planet Earth, it consists of water by 70% Man also consists of water by 70%

Where is water found on Earth? OCEAN LAKE SEA RIVER STREAM

STATES OF WATER VAPOR - GASEOUS ICE - SOLID WATER - LIQUID

PROPERTIES OF WATER WATER HAS NO TASTE ODOR COLOR CAN DISSOLVE CERTAIN SUBSTANCES TAKE ANY SHAPE DYE IN DIFFERENT COLORS

HOW DOES MAN USE WATER? HYGIENE PROCEDURES FOOD AND BEVERAGE

Let's learn a poem Have you heard about water? They say she is everywhere. In a puddle, in the sea, in the ocean And in a faucet. How the icicle freezes. It creeps into the forest with fog, It’s called a glacier in the mountains (Crawls into our house with fog, Boils on our stove, Dissolves sugar in tea (We don’t notice it). We are used to the fact that water is always our companion! , do not get drunk, I dare to report to you: We cannot live without it.

CHECK YOURSELF: WITHOUT WHAT THERE WILL NOT BE LIFE ON EARTH? WHERE IS WATER ON EARTH? WHY DOESN'T THE WATER DISAPPEAR? WHAT STATES AND PROPERTIES OF WATER DO YOU KNOW? HOW DOES MAN USE WATER? TELL THE POEM TO YOUR PARENTS AT HOME.

THANK YOU FOR YOUR ATTENTION!

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