Presentation “What is water? What is water Facts about water

“States of water” - The smell of water. “Drowning or not drowning.” In the cold, water particles move more slowly, so the water turns into ice. Why doesn't an egg sink in salt water? Solutions. Participants: children of senior and preparatory groups. Properties of water. Information resources: Liquid. Academic subjects: Cognitive development. Where does water occur?

"Taiga" - Squirrel - flying squirrel. Flying squirrel. Fir. Name the tree: “Tall, slender, with yellowish-reddish bark. Taiga plants. Spruce. Primary school teacher of school No. 602 Kondrashova M.A. Pine needles are long and sit in pairs. Winter in the taiga is cold. Natural conditions of the taiga. Cedar. Animals of the taiga. Larch.

“Chemical phenomena” - What happens to the substance? Continue developing general communication skills. What phenomenon is depicted? The work was performed by: Zaeva N.V. biology teacher at Municipal Educational Institution "Secondary School No. 41". What are you observing? What are the conditions for the processes to occur? What chemical phenomena are happening around us? Expand knowledge about the structure of matter.

"Ice Deserts" - Saratov. Ice deserts of the Arctic and Antarctic. Completed by: Elena Baranova Student of Lyceum No. 62, 3 “G” class. Most of Antarctica is occupied by the continent of Antarctica. The Arctic and Antarctic surround the Earth's North and South poles. Saxifrage. For several months it is light around the clock, but not warm. Arctic and Antarctic.

“Minerals” - The “Fragile Twig” experiment was conducted by Elena Krutskikh, 1999. As a result of what and where are minerals formed? Scientists from all over the world come here in search of new minerals. Mineral color. Mohs hardness scale. Rhodonite. Karpinsky Alexander Petrovich is a famous Russian geologist.

“Lesson The water cycle in nature” - Three states of water. A sunflower drinks 20 buckets of water over the summer. Do you think there is a lot of water on our Earth? What states does water come in? How can you, children, conserve water? Animal trails in the forest lead to ponds. Water in nature exists in three states: Liquid, solid, gaseous.

There are 8 presentations in total

Description of the presentation by individual slides:

1 slide

Slide description:

The presentation was compiled by the teacher of the MBOU “Gymnasium No. 1” of the Kovylkinsky municipal district of the Republic of Moldova, Kostkina A.N.

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Her Majesty - Water A drop from a birch leaf rolled down near me, fell into a babbling stream, and it rushed off, ringing. And she dashed into Lena, sparkling, and the great water flowed. What will happen to the drop? I don't know! Where will it reach, where will it land? But all oceans are made of such small drops. And the drops crush the rocks, thundering like menacing shafts.

3 slide

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Every person knows what water is. It is needed for cooking and other household needs, for the operation of industrial enterprises, and for growing good crops. Water has many amazing properties that make it unlike all other substances. But among them there is one most unusual thing - this is her immortality

4 slide

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The role of water in the life of nature is also great: there is no life without water. Living organisms on our planet have adapted to all sorts of conditions: to complete darkness and enormous pressure at the bottom of the oceans, to 70-degree heat in deserts and to 70-degree cold in Siberia and Antarctica. But no living creature can do without water.

5 slide

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6 slide

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Without water there can be no bright flowers, no green trees, no birds singing, no golden fields of wheat.

7 slide

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All plants and animals contain water, and our own body is 3/4 water. Did you know that when a person loses 1-1.5 liters of water (this is approximately 2% of body weight), a feeling of thirst appears. When the body loses 6-8% of moisture, a person falls into a semi-fainting state. Losing 10% of water causes hallucinations and the swallowing reflex is impaired. If the water loss exceeds 12%, the person dies.

8 slide

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Water is the most common substance on Earth. ¾ of the surface of our planet is occupied by seas and oceans. If all the water was distributed evenly across the globe, then such a World Ocean would be up to 4 km deep, and if all the water were collected in one drop, then its diameter would be 1500 km. The main water reserves on Earth are concentrated in the seas and oceans - about 1.4 billion km. cube

Slide 9

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Fresh water is found mainly in glaciers - more than 30 million cubic km, as well as in rivers and lakes - about 2 million cubic km; the atmosphere contains 14 thousand cubic km. water vapor. But it is constantly consumed both in life processes and in production. Year after year, more and more of it is consumed, and more and more often and more alarmingly they talk about a lack of water. We are not talking about water in general, but about fresh water, which a person cannot do without. So what are the causes of water shortage? Decreased water flow in rivers due to deforestation along the banks. Its merciless pollution. Sources of pollution: domestic, industrial and agricultural wastewater, thermal and nuclear power plants. Wastewater from industrial enterprises contains heavy metals such as mercury, lead, cadmium; once in water bodies, they cause the death of plankton and mollusks, which participate in the self-purification of water.

10 slide

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Leaks of oil, gasoline, kerosene, and fuel oil pollute water bodies. Radioactive contamination is very dangerous. The so-called thermal pollution of water bodies has increased, which is why fish move to other water bodies. The ingress of polymer materials causes litter in the water areas of ports and the coasts of water bodies. There are cases of seals dying from suffocation with plastic bags. Widely used synthetic detergents, even in small quantities, are toxic to aquatic life. The quality of consumed water directly affects the health of humans and animals; The cleaner the water, the better the ecology and the more beautiful the native nature; What is better: spending a lot of money on water purification or trying not to pollute it; Although water, thanks to the cycle, is a constantly renewed resource, dirty and poisoned water is a mortal threat to all living things.

Nomination "Multimedia technologies in the pedagogical process in preschool educational institutions"

During preschool childhood, the child discovers the natural world. Supporting preschoolers' natural interest in all living things, the teacher leads children from acquaintance with nature to understanding it.

The child’s ability to explore the world around him is provided by activity, since it is an important condition and means of cognition. To be active means to be active!The more complete and varied a child’s activity is, the more significant it is for the child, the more successful his development is.

Prominent Russian psychologist S.L. Rubinstein considers observation as the result of meaningful perception, during which the development of mental activity occurs. He connects the development of various forms of perception and observation with content. The question of the content of observations is important. - what a child can and should see, what features of natural objects to notice.

Target: This presentation provides clarity - a visual display in the classroom. Introduce children to the properties of water.

Tasks: The presentation work is structured in such a way that after a conversation (with viewing slides) about the need for water for all living things, it will smoothly integrate into the topic of the lesson. The teacher, moving step by step, tells where water is found, conducts experiments, and clearly demonstrates the phenomena of inanimate nature on slides. Develops logical thinking, visual and auditory attention, creative imagination.

Efficiency: consolidates knowledge about inanimate nature, contributes to the creation of an information and communication environment, and meets modern requirements.

Practical significance:

A visual introduction to the need for water for humans, animals and plants.
Familiarization with the phenomena of inanimate nature, with the properties of water.
Poetic part.

Place of use of multimedia material: can be used both by teachers of preschool institutions as visual material in a lesson to familiarize themselves with the natural phenomenon - water, and by parents to organize cognitive and research activities of children at home.

Equipment: Computer, multimedia projector.

PROGRESS OF THE CLASS

Organize children's attention and create play motivation. To the sounds of “The Sound of Water,” a SCIENTIST FROM THE MAGICAL LABORATORY enters in a robe and a quadrangular academic cap.

Hello guys! I came to visit you, my name is Scientist, and today I will tell you about one of the greatest riches of our planet! But first, guess the riddle:

Introduction to the game situation, preparing children for the topic of the lesson

She is both in the lake and in the puddle
She is circling above us like a snowflake,
It boils in our kettle too,
She runs in the river, gurgles ( water).

Have you guessed what we will talk about today? We will talk about water. I want to invite you to my magical laboratory and tell you about the great miracle - water. There we will become young scientists. Let's conduct experiments to understand how unique it is. Do you know what a laboratory is? (This is the place where scientists conduct experiments and conduct experiments).

And to get there you need to answer several questions.

SLIDES No. 2,3,4,5,6,7,8.

Tell me, why does a person need water? ( A person drinks water, washes, cooks, waters gardens, gets rid of dirt with water).

But not only humans need water! ( Animals, plants, insects, birds, and fish need water. Without water, living things cannot survive).

That's right, now let's play a game.

Igra “Who needs water?”

Each child chooses a picture depicting various objects of nature (animal, plant, person - a small child, a woman, etc.) and tells why the person depicted in the picture needs water (other children can add).

Well done! Let's go to our laboratory, here you will find out what properties it has, but first let's remember the rule for handling water:

Since we are dealing with water
Let's roll up our sleeves with confidence.
Spilled water - no problem
Always have a rag at hand.

Let's stand in a circle, hold hands and close our eyes.

(CD music “Sound of the Surf” sounds).

Here we are in the water laboratory!

SLIDES No. 9, 10 (magic laboratory, globe).

It is difficult to find a place on earth where there is no water. Water is everywhere: in oceans, seas, rivers and lakes. Water is found in the earth, water is found in plants, animals, even humans. Look at our planet, this is how it looks from space. Why is there so much blue on it? (These are seas, oceans, lakes, rivers, this is all water).

That's right, now:

Have you heard about water?
They say she is everywhere!
Like an icicle freezing.
Fog creeps into the forest.
It's called a glacier in the mountains.
It curls like a silver ribbon.
We are used to the fact that water is
Our companion always!

Slides No. 11, 12, 13.

Tell me what you know about water, where it occurs naturally (in seas, oceans, rivers, lakes, swamps).

SLIDES No. 14,15,16,17.

Tell us what inanimate phenomena are associated with water. (Dew, fog, cloud, steam, rain, snow, ice, frost).

Conclusion: water is one of the most important substances for nature; it is found everywhere, even inside a living organism. Water not only gives you drink, but also feeds you; you can’t cook a single dish without water. Water generates electricity and helps transport goods. Although it seems that there is a lot of water on the planet, living organisms only need fresh water, and there is not very much of it in nature. And for this reason it must be protected.

Activate children's knowledge about water, develop children's social skills, prove the correctness of their opinions, consolidate children's knowledge about the properties of water.

SLIDE No. 18 ( Three states of water).

Let's see what state water can be in in nature.

EXPERIMENT No. 1 “WATER-LIQUID”.

Pour water from one glass to another (from smaller to larger). You see how our water flows. This means it is LIQUID and does not have its own shape.

SLIDE No. 19 (liquid water).

EXPERIMENT No. 2 “WATER IS STEAM” (The scientist brings in a thermos with hot water).

What comes out of a thermos when water boils? (Steam)

Where did the steam come from in the jar - we poured water?

Conclusion: When heated, water turned into STEAM.

SLIDE No. 20 (pairs).

EXPERIMENT No. 3 “STEAM IS WATER” (brings cold glass to the stream of steam).

Look what happened to the glass. Where did the water droplets on the glass come from? When the steam hit the cold glass, it turned into water again.

Conclusion: steam turns into WATER when cooled.

SLIDE No. 21 (steam turns into water when cooled). This is what happens in nature.

Physical education moment.

Making scientific discoveries is not an easy task, so there are rest breaks in laboratories. It would be nice for us to rest a little. What do our young scientists think? Let's step away from our laboratory tables and go to the carpet.

(Children are located on the carpet in random order.)

While stretching our lower back, we will not rush.
Turn right, turn left, look at your neighbor.

(Turns in different directions)
To become even smarter, we will slightly twist our neck.
Once and twice, once and twice, my head began to spin.

(Rotate your head right and left)
One two three four five. We need to stretch our legs.

(Squats)
Finally, everyone knows how to always walk in place.

(Walking in place)
There are benefits from warming up! Well, it's time to sit down

Every day the sun heats the water in the seas and oceans - just as it heats up in kettles of water.

Water turns into steam. As steam, tiny, invisible droplets of moisture rise into the air. The higher the steam rises, the colder the air becomes. The steam turns back into water. The droplets all come together and form a cloud.

SLIDE No. 22 (cloud).

When there are a lot of water droplets, they become very heavy for the cloud and fall as rain on the ground.

SLIDE No. 23 (rain).

What do water droplets turn into in winter? (Into snowflakes).

EXPERIMENT No. 4 “WATER IS SOLID”. (Ice trays are brought in and each child is given an ice cube).

In winter, another amazing phenomenon occurs on the surface: the water turns into ice. Look how hard ice is, which means water can become SOLID.

SLIDES No. 24,25,26 (snowflakes, ice).

Now let’s hold it in our hands, what’s going on? From the warmth of our palms, it began to melt as if heated, and again turns into a LIQUID STATE

This is how the water repeats its path. This is called the water cycle in nature.

(Use of artistic expression as a means of consolidating acquired knowledge about the water cycle in nature).

SLIDES No. 27,28 (water cycle in nature).

Water travels in nature
It never disappears.
It will turn into snow, then into ice,
It melts and goes on a hike again.
Suddenly it soars into the sky,
It will turn into rain.
Look around
Take a closer look at nature.
You are surrounded everywhere and always
This sorceress is water.

Let's rest a little again and do some self-massage.

Clear water flows
We know how to wash ourselves.
(Children rub their palm against their palm.)
Wash your nose, wash your mouth,
(rubbing the wings of the nose).
Wash your neck, wash your ears.
(Rub your earlobes with your fingers).
Afterwards we dry off.
(stroke forehead).

Well, my dears, our trials are coming to an end. Were you interested in being a scientist? (Yes). Let's summarize our acquired knowledge. Do you guys now know what types of water there are? (Liquid). And if you freeze it, what does the water turn into? (Into the ice). What about when heated? (In steam).

Reflection

Now I will award each of you with a badge that says “Young Scientist.” This means that you have learned a lot of new things, but you won’t stop there, and you will continue to learn a lot of new and interesting things about our planet called Earth. Conduct wonderful and unusual experiments.

(Put stickers in the shape of droplets on the chest of each child. Create conditions for the psychological comfort of children).

And before you leave my magical laboratory, I want to treat you to spring water.

Droplets travel not only through the air and the ground, but also go underground. There they absorb all the healing properties of the earth and come to the surface in the form of springs. This water becomes the most healing. It gives vigor and strength to all living things.

SLIDE No. 29 (springs). (Treating children with spring water)

Now let’s hold hands again, close our eyes and listen to the sound of the water, and move to our d/s. Goodbye, my young scientists, see you again!

(music “The Sound of Water”).

Presentation for class

Slide 2

Goals and objectives

Develop a set of computer slides for demonstration in an 8th grade chemistry lesson
Consider the basic physical and chemical properties of water, the composition of the water molecule
Study additional material on the topic
Show the importance of water in nature, for humans, the most interesting areas of application of water
Study the material of multimedia textbooks in chemistry

Slide 3

Water in nature

Slide 4

Physical states of water

The only substance in nature that exists in three states of aggregation:

liquid state
solid state
gaseous state

Slide 5

Water molecule

Each water molecule consists of two hydrogen atoms and one oxygen atom, connected by chemical bonds.

Oxygen atom + Hydrogen atoms = Water molecule

Slide 6

Physical properties of water

Aggregate states of water:

Liquid (water)
Solid (ice)
Gaseous (steam)

Physical properties of water:

colorless, tasteless, odorless, transparent
has weak electrical conductivity
t boil = 100 °C, t melt = 0 °C

Slide 7

Water is a solvent

Slide 8

Chemical properties of water

1. Interaction of water with active metals

2Na + H2O = 2NaOH + H2 (Sodium Hydroxide)
Li + H2O = LiOH + H2
K + H2O = KOH + H2

Slide 9

2. Interaction of water with non-metals

C + H2O = CO + H2 (Water gas)

4. Interaction of water with acid oxides

CO2 +H2O = H2CO3 (Carbonic acid)

3. Interaction of water with basic oxides

Na2O + H2O = 2NaOH

Slide 10

Water cycle in nature

Slide 11

The importance of water for humans

Directly in the form of free liquid (various drinks or liquid food), an adult on average consumes about 1.2 liters of water per day (48% of the daily requirement). Porridge contains up to 80% water, bread - about 50%, meat - 58-67%, fish - almost 70%, vegetables and fruits - up to 90%

Slide 12

Basically, water is excreted from the body through the kidneys, on average 1.2 liters per day - or 48% of the total volume, and also through sweating (0.85 liters - 34%). Part of the water is removed from the body by breathing (0.32 l per day - about 13%) and through the intestines (0.13 l - 5%).

Slide 13

Daily water requirement

Slide 14

Water is fuel

The sci-fi future is slowly but surely making its way into our homes. And now you can easily buy yourself a watch that receives electricity for its work from ordinary water.

How does this miracle watch work? Inside is a converter that “extracts” electrons from liquid molecules, and works like a fuel cell for a watch. Water consumption is very small. It is reported that one refill of the tank will be enough for “several weeks” of uninterrupted operation.

Multimedia textbook "Chemistry" 8th grade, M., Prosveshchenie, 2002

Educational collection 1C “Chemistry for everyone-XXI”, M., 2004

View all slides

Goals and objectives

Develop a set of computer slides for demonstration in an 8th grade chemistry lesson
Consider the basic physical and chemical properties of water, the composition of the water molecule
Study additional material on the topic
Show the importance of water in nature, for humans, the most interesting areas of application of water
Study the material of multimedia textbooks in chemistry

The only substance in nature that exists

in three states of aggregation

liquid state

solid state

gaseous state

Each water molecule consists of

of two hydrogen atoms And one oxygen atom ,

connected by chemical bonds

Water molecule

oxygen atom

Hydrogen atoms

Physical states of water

Gaseous

colorless, tasteless, odorless, transparent
has weak electrical conductivity
t boil = 100 o C, t pl = 0 o C

Salt molecule

Water molecule

1. Interaction of water with active metals

Li+H 2 O

LiOH+H 2

2NaOH +H 2

2Na+H 2 O

Sodium hydroxide

KOH + N 2

K+H 2 O

2. Interaction of water with non-metals

CO+H 2

C + H 2 O

Water gas

3. Interaction of water with basic oxides

Na 2 O +H 2 O

Sodium hydroxide

Sodium oxide

4 . Interaction of water with acid oxides

H 2 CO 3

CO 2 + H 2 O

Carbonic acid

Cold air

The cloud is transferred

Crystals

ice

air current

Water drops

Warm air

Animals

Plants

People

hail

Rain

Snow

Precipitation

Soil.water bodies

Directly in the form of free liquid (various drinks or

liquid food) an adult consumes on average per day

about 1.2 liters of water (48% daily value) .

porridge contains up to 80% water, bread - about 50%, meat - 58-67%,

fish - almost 70%, in vegetables and fruits - up to 90%

Water is mainly excreted from the body through the kidneys,

on average 1.2 liters per day - or 48% of the total volume,

and also through sweating (0.85 l. - 34%).

Part of the water is removed from the body during breathing (0.32 liters per day - about 13%)

and through the intestines (0.13 l - 5%).

Your weight (kg)

Daily water requirement, l.

At low physical activity

With moderate physical activity

At high physical activity

The sci-fi future is slowly but surely making its way into our homes. And now you can easily buy yourself a watch that receives electricity for its work from ordinary water.

Japanese explorer Masaru Emoto(Masaru Emoto) provides amazing evidence of the informational properties of water. During his work, he took more than 10,000 photographs, some of them published in his books “The Messages from Water” 1, 2 and “Water knows the answer.” Dr. Emoto used a Magnetic Resonance Analyzer (MRA) for several functions, including qualitative water analysis. He noticed that no two samples of water formed exactly alike crystals, and that the shape of the crystals reflects the properties of water .

Antarctic ice

Anthem of Moscow

Russian anthem