EntranceThematic week of the surrounding world in primary school. The world around us. Why does day give way to night on Earth? The pattern of day and night changes in the world around us
What is the difference between day and night? What pictures show the day? The day is light because the sun is in the sky. It illuminates the Earth even through the clouds. It is dark at night because there is no sun in the sky. The day is light because the sun is in the sky. It illuminates the Earth even through the clouds. It is dark at night because there is no sun in the sky.
The earth rotates around its axis. When it makes a half turn, day gives way to night. At this time, daylight is coming on the other side. The Earth makes a full revolution in 24 hours, that is, in a day. The earth rotates around its axis. When it makes a half turn, day gives way to night. At this time, daylight is coming on the other side. The Earth makes a full revolution in 24 hours, that is, in about a duck's time.
The reason for the change of day and night is the rotation of the Earth around its axis. The earth rotates As long as we are on the illuminated side, it is light for us. As long as we are on the illuminated side, it is light for us. While we are on the shadow side, it is dark for us. While we are on the shadow side, it is dark for us. day Night
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Lesson topic: “Change of day and night”
Lesson objectives:
1. Give a general idea of the cycle of day and night on Earth.
2. Explain the connection between the change of day and night with the rotation of the Earth around its axis.
2. Create conditions for the development of UUD
- Personal:ability for self-assessment based on the criterion of success in educational activities.
- Regulatory UUD: determine and formulate the goal in the lesson with the help of the teacher; plan your action in accordance with the task; make necessary adjustments to the action after its completion based on its assessment and taking into account the nature of the errors made.
- Communication UUD: listen and understand the speech of others; express your thoughts orally.
- Cognitive UUD: - organizing work to summarize information from the textbook, teaching the ability to analyze the presented material through observation.
3. Promote development practical skills for using the information obtained in the classroom in real life conditions.
Expected results:
- Subject
Know why the change of day and night occurs.
Explain the relationship between the change of day and night with the rotation of the Earth around its axis.
Vocabulary enrichment
- Metasubject:
1. Be able to obtain information from practical activities.
2. Be tolerant of the opinions of classmates.
3. Be able to control your activities based on the progress and results of the task.
Lesson type: learning new material.
Forms of work: individual, group, frontal
Resources used: Textbook “The World Around us” Our planet Earth, authors A.A. Vakhrusheva, O.V. Bursky, A.S. Rautin, tellurium.
Presentation for ID TRACEBoard
TRKM techniques: table “Believe or disbelieve”, cluster
Children sit in 4 groups of 6 people, in the middle of the class there is a carpet.
During the classes
Org. moment.
The children stood in a circle on the carpet. (The game “Broken Phone” is played)
Let's play the game "Broken Phone"
The teacher conveys the phrase “Day and night - a day away” to the student standing next to him.
After passing around the circle, the last one says what he heard.
Conclusion: to be heard, you need to speak clearly; to be heard, you need to be attentive.
The children sit at their desks.
II. Updating knowledge. Call.
The teacher at ID opens the curtain, an image of the planet Earth appears on the board
For several lessons we study the laws of nature occurring on earth. Look at the blackboard (the teacher then opens the curtain and signs appear with recorded topics from past lessons: Earth’s gravity, What are all objects made of?, Earth in space, Earth is spherical) who can put the topics in the order in which we studied them?
Students go to the board and put the topics in the right order.
The following appears on the board:
What are all the items made of?
The earth has the shape of a ball.
Earth in space.
The gravity of the earth.
Which topic can be removed? (What are all the items made of? Doesn't it fit with the others?)
Quickly review what we learned from studying these topics. (There is a frontal survey - children talk about the most important points: the Earth is a ball, the Earth has a satellite - the Moon, etc.)
Who agrees? Don't agree? (Children use special icons to show their agreement or disagreement)
U
There is life Favorable climate The teacher opens the next slide on ID, where the cluster compiled TOGETHER with the children in previous lessons is located. In the center there is an image of the planet Earth. ID capabilities allow you to save what was done in previous lessonsEarth Shaped like a ball Rotates around the Sun Third planet from the Sun
Rotates around its axis
There is a moon satellite
Calendar appeared
Earth gravity We're not going into space Objects are attracted Everything falls to the ground
Let's check how this knowledge will help you cope with the task. (Work in groups)
The teacher distributes task cards
EXERCISE 1:
Connect with arrows the observations of the inhabitants of the Earth and explanations using the rules and laws of nature:
Tiny houses can be seen behind the forest
Checking the work of groups, the next ID slide opens
Respondents from the groups take turns going to the ID and using colored markers to show their answer. This way you can see which groups have the same answer and where there is disagreement.
Problematic situation. Exit to the topic of the lesson
It’s very interesting that the groups’ opinions coincided on…..
Where did the disagreements arise? (it turns out that disagreements both within and between groups arose on the question: why does morning come. Someone answered that morning comes from the rotation of the Earth around the sun, and someone from the rotation of the Earth around its axis)
Very interesting, who is right?
The morning comes and the day begins. Do you remember what proverb our lesson began with? (Day and night - a day away)
How do you understand this proverb? (Children's answers)
Who agrees? Who disagrees?
The teacher opens the next slide, on which is written: The main question of the lesson, The topic of the lesson
What is the question? (What is day and what is night? Why does the change of day and night occur?)
What will the lesson be about? Who guessed what the topic of today's lesson is? (Lesson topic: Change of day and night)
Questions: What is day and what is night? Why does the change of day and night occur?)
and the topic: Change of day and night, appear on the slide. The teacher also records them on a regular board so that they are always in front of his eyes during the lesson.
People used to think that the Sun moved around the Earth. Therefore, during the day it is light, and when the Sun hides behind the horizon, night comes.
But the Sun, we know, what object is it? (Fixed)
What revolves around what? (The Earth around the Sun and the Earth around its axis).
I suggest testing your knowledge. Let's play the game “Believe it or not”
There are signs on your tables:
The top line contains the question numbers, and on the bottom line you need to mark: “+” if you agree with my statement and “-” if you disagree.
1. Do you believe that the change of day and night on Earth occurs from the rotation of the Earth around its axis?
2. Do you believe that the change of day and night on Earth occurs from the rotation of the Earth around the Sun?
3. Do you believe that there can be day and night on Earth at the same time?
4. Do you agree that there are 24 hours in a day?
5. Do you believe that the Sun can illuminate the earth from all sides?
We will check whether you answered the questions correctly or not at the end of the lesson.
III. Comprehension
The teacher opens the next slide, which shows children - they are present in every lesson - these are characters invented by the authors of the textbook: Lena and Misha. Lena is little, she is interested in everything and asks questions, and Misha is her older brother who knows everything. On the slide, dad is watching TV, the moon is shining outside the window. The ID “Eraser” technique is used, the children’s conversation is hidden with a white marker.
What time of day? (night)
Why did you decide so? (the moon is shining outside the window, it’s dark)
Lena and Misha's dad is watching a live football match on TV. The announcer said that it was daytime. Lena immediately had a question: ( the teacher uses the “eraser” tool to reveal Lena’s words)
Lena: “Why does the presenter say that it’s daytime?”
Guys, could this be the case? Night and day at the same time? (some children answer that yes - if somewhere far away, in another city. But there are also those who disagree - they claim that this cannot be)
The question arises again. Which? (Can there be day and night on Earth at the same time?)
The teacher writes down another question that has arisen with chalk on a regular blackboard.
Switches the ID to the next slide, which contains pictures of day and night, where either the moon or the sun is shining, the sky is overcast, and a table is drawn.
Place the pictures in the correct columns of the table.
Day
Children arrange the pictures in the correct columns on the ID.
Who agrees? Don't agree? Do you have any questions for those answering? (Children ask: why is a picture in which there is no sun in the day column?)
What an interesting question. (During the discussion, it turns out that sunlight penetrates even through clouds, but moonlight does not penetrate clouds).
Guys, I also had a question: Can the Sun illuminate the Earth from all sides?
The teacher switches the ID to the next slide, which shows the Earth and sunlight falling on the Earth
Look for the answer to my question on page 52 of your textbook.
Group work:
Task 2
Look at the illustration.(The picture shows a globe and a lamp, the lamp illuminates the side of the globe where Moscow is located)
Find the answer to the question and justify your answer:
What time of day is it in Moscow?
What needs to be done with the globe for night to fall in Moscow?
Checking the work of groups:
There is tellurium on the teacher's desk
- The answerer comes out and shows his answer on my device, it’s called tellurium. (Representatives of the groups come out, show and explain their answer.)
What conclusion can be drawn? (If the side is illuminated, then it is day here, on the other side it is night)
The output appears on the ID under the picture
Does the Sun illuminate the Earth from all sides? (No)
Who guessed why the change of day and night occurs on Earth? (Children answer that since the globe was rotated around an axis, and the globe is a model of the Earth, and the Earth also rotates around its axis - the change of day and night occurs, then the earth rotates around its axis.)
Watch the scientific explanation. (Movie in progress: 3 min)
Let's go back to Lena and Misha.
The ID switches to the slide where Lena and Misha found out whether there can be day and night on Earth at the same time.
Let's see what Misha answered Lena (Using the “eraser” tool we show Misha’s answer)
What question from our lesson did we answer? (On Earth there can be both day and night at the same time)
The film says: how long does it take for the earth to make a full revolution around its axis? Who heard? (24 hours)
What can be concluded? (The earth makes a full revolution in a day or 24 hours. It is once again clarified that a day is day and night)
The teacher switches the ID to the next slide on which it is written: joint discovery of knowledge, the Earth and the Sun are depicted
Once again, remember the proverb with which we began the lesson: Day and night - a day away.
What time of day is it now? (Day)
I wonder how many revolutions the Earth must make for night to fall? (Children answer with confidence that one revolution, the teacher marks the location of the city in tellurium and turns the globe. The children are at a loss.)
Look for the answer to this question in the article on p. 52. (Individual work followed by discussion of the answer in a group)
So how many revolutions does the Earth have to make for day to change to night? (half a turn)
An inscription opens under the picture (the curtain tool was used)
The earth rotates around its axis. When it makes a half turn, day gives way to night. At this time, daylight is coming on the other side. The Earth makes a full revolution in 24 hours, that is, in a day. The teacher asks one of the children to mark with a colored marker how many revolutions the Earth makes so that day turns into night and how much time passes when the Earth makes a full revolution around its axis.
IV. Reflection
Now take your Believe It or Not and check your answers at the beginning of the lesson. Those who have the same opinion - circle the sign; those who have changed - cross it out and write a new answer next to it.
The teacher reads again the statements he read at the beginning of the lesson, and the children mark their answer.
Whose opinions have changed?
Who has the same opinion?
- Look at the questions we asked at the beginning of the lesson. (Return to the questions written on the board)
Have all your questions been answered? (Yes)
I wonder what would happen on Earth if the Earth did not rotate around its axis? (listen to 1-2 answers)
Homework:
Using the Internet or encyclopedias, conduct research - how many degrees will there be on that half of the Earth where there is no sunlight and vice versa, to how many degrees will the surface heat up if the sun constantly illuminates the Earth. Come up with your own fantastic story on this topic.
Group work.
Let's return to our cluster, what new knowledge have you gained? Can we add something?
Discuss as a group. (Children receive clusters that they did in groups in previous lessons and supplement them with new knowledge)
Have all the phenomena recorded in our cluster been revealed? (No, we don’t know what happens from the Earth’s rotation around the Sun and what is affected by the fact that our planet Earth is spherical)
We will answer these questions in our next lessons.
Checking your work on self-assessment sheets
Who worked actively in the group today?
Who didn't participate in the discussion?
Children come out into the circle again:
Tell me what you learned in class today. Begin your answer with the words: During the lesson I learned….., I was interested to know……
Children speak in a circle
Sometimes our mood depends on whether the day is sunny or cloudy. And by the mood you’re in from the lesson, I can tell by your sunshine. If the lesson was interesting and everything is clear, draw a funny sun, and if it’s not interesting, it’s boring, draw a funny sun.
The teacher gives out suns. Children draw and attach their suns to the board.
Thank you for the lesson!
To conduct the lesson I used Internet resources:
Lesson outline: Lesson 13
For presentation at ID TRACEBoard used PowerPoint presentation material:
Anyone familiar with this brand of board knows that there is no support for this board.
Video: http://www.klass39.ru/smena-dnya-i-nochi/
2nd grade
The world
(UMK PNSh)
Topic: Why does day give way to night on Earth?
Subject results: will learn to explain and demonstrate the movement of the Earth around its axis and its connection between the cycle of day and night.
Meta-subject results:
Cognitive - students will learn to work with two sources of information (a textbook and a notebook for independent work; a textbook and an explanatory dictionary); expand their horizons and enrich their vocabulary.
Regulatory - students will learn to work using an algorithm; will be able to compare and evaluate their work.
Communication– learn to express their point of view, work in groups and pairs.
Personal results learn to respect other opinions.
Equipment: globes, task cards, flashlights, presentation, textbook by O.N. Fedotova “The world around us”, 2nd grade, O.N. Fedotova “Notebook for independent work” No. 1, textbook by N.A. Churakova “Russian language” 2nd grade. part 2
During the classes
Organizing time.
The long-awaited bell rang and the lesson began.
Updating knowledge.
What did we talk about in the last lesson? About planet Earth
What interesting things can you tell us about Earth? ? Children's messages
Listen to the poem and tell me what it is about?
(student reads a poem)
There is one garden planet
In this cold space.
Only here the forests are noisy,
Calling migratory birds.
It's the only one they bloom on
Lilies of the valley in the green grass,
And dragonflies are only here
They look into the river in surprise...
Take care of your planet -
After all, there is no other one like it!
Roman Sef
Now let's work in groups
“Complete the correct words”
Planet Earth has a shape similar to….(ball).
Globe-... (model of the Earth).
What is more on Earth: land or water?....(water).
The line dividing the globe into the Northern and Southern Hemispheres is... (equator)
Our Motherland is located in which hemisphere? ….(Northern)
Self-test slide
Setting the topic and objectives of the lesson
Guess the riddle and you will find out what we will talk about today.
One after another in succession
Brother and sister walk peacefully.
Brother wakes up all the people.
And my sister is the opposite,
Calls you to sleep immediately.
(Day and night)
Read the topic of our lesson. State the objectives of the lesson.
Primary perception and assimilation of new material.
Conversation
Guys, how do we determine that the day has come?
What do you know about the Sun?
Message about the Sun. (student says)
Usually we say “The sun has risen” or “The sun has set”; it seems to us as if the Sun is moving around the Earth. But the opposite is true. When you are driving on a smooth road, what do you think when you look out the window? It’s as if the car is standing still, and houses and trees are rushing past.
This is an optical illusion - an illusion. Our vision deceives us in the same way when observing the Sun.
Or are you spinning on a carousel...
Our Earth rotates non-stop around its axis, exposing first one part and then another to the Sun. Therefore, day gives way to evening, and evening to night, and after night comes morning, and then a new day.
Work from the textbook (page 20 -_21)
Let's, guys, read the article in the textbook on page 20.
Which word do you not understand? Let's find it in the Explanatory Dictionary.
Working with the “Explanatory Dictionary” (Textbook “Russian Language” No. 2 p. 102)
Imaginary- existing not in reality, but in our thoughts.
Application of theoretical principles in task conditions.
Work in groups.
Take a flashlight and imagine that it is the Sun. Shine a flashlight on the globe. How is the Earth model illuminated? Let's point a flashlight at the territory of our Motherland. The sun is shining here, which means we have...? (Day) And in America? (Night)
6. Physical exercise
Carousel
Barely, barely, barely the carousel spun,
And then around and around everything, running, running, running.
Hush, hush, don't rush!
Stop the carousel
One, two, one, two - the game is over!
7. Generalization of what has been learned.
Work in pairs p. 22 “Earth and Sun.” The experience of Masha and Misha.
Let's read what experience Masha and Misha conducted. Now let's do it ourselves.
What happened when your neighbor turned around? (days have passed)
How long does it take the Earth to complete a revolution around its axis?
(24 hours in advance).
How can you call it differently? (Earthly day)
Earthly day - time of one revolution of the Earth around its axis (24 hours). During this time on earth, night gives way to day and night comes again.
How many revolutions around its axis will the Earth make in a week? 7
Per month? 30 or 31
Work in notebooks (individual) page 8 No. 10
Self-test slide
Lesson summary.
Guys, do you remember, at the beginning of the textbook Misha asked questions. Let's try to answer some.
Why does day give way to night on Earth?
Is it possible to make it so that in the village of Mirny, like in the city of Other in the country of Alien, there is always daylight?
What sources of information helped us answer? (textbook, reader, internet...)
D/z in t p.8 No. 11 and No. 12
Bibliography:
Entertaining materials for literacy and Russian language lessons in elementary school (poems, crosswords, riddles, charades) / Comp. N.A. Kasatkina.-Volgograd: Teacher, 2005.-128 p.
Fedotova O.N., Trafimova G.V., Trafimov S.A. The world.
2nd grade: Textbook. 1ch.-M.: Academic book/Textbook
Fedotova O.N., Trafimova G.V., Trafimov S.A. The world around us. 2nd grade: Notebook for independent work No. 1.-M.: Academic book/Textbook
Fedotova O.N., Trafimova G.V., Trafimov S.A. The world around us. Grade 2: Methodological manual for teachers.-M.: Academic book/Textbook
World Environment Day
Q. Good afternoon to everyone who decided to join us on this wonderful day and go on a journey through the expanses of our mother nature. And the motto of our journey is this: (Slide. All in unison)
The nut of knowledge is hard, but still
We are not used to retreating.
It will help us split it
A game whose motto is;
“I want to know everything about nature.”
- WARM-UP (question-answer)
- What does elk lose every winter? (Horns.)
2. Whose teeth grow every day? (Beaver, hare.)
3. Who sleeps upside down? (Bat,)
4. Bloodthirsty predator of our forests? (Wolf.)
5. Which animal has the loudest voice? (Crocodile.)
6. Are hares born blind or sighted? (Sighted.)
7. An animal in our forests that looks like a cat. (Lynx.)
8. When does a hedgehog not prick? (When I was just born.)
9. What is our smallest animal? (Shrew - 3.5 cm.)
10. Where is the grasshopper's ear? (On the foot.)
11. Animal science? (Zoology.)
12. How many legs does a spider have? (8)
13. How many legs does a beetle have? (6)
14. What does a grasshopper chirp with? (Foot on the wing.)
15. A small animal, a relative of the squirrel. (Flying squirrel.)
16. The cleanest animal? (Badger.) - “These Amazing Plants” film screening
Who can remember more names of spring flowers?
- Many secrets and mysteries of nature can be revealed if you are careful. Some of these riddles - secrets - will be revealed to you today by your friends - animals.
Who will come to us first?
Puzzles.
1. Look what it’s like
Everything burns like gold.
Walks around in a fur coat dear
The tail is fluffy and large.
(they guess, a fox appears on the screen)
2. I walk around in a fluffy fur coat,
I live in a dense forest.
In a hollow on an old oak tree
I'm gnawing nuts.
(they guess, a squirrel appears on the screen)
3. Who is cold in winter?
The evil one wanders
Hungry?
(they guess, a wolf appears on the screen)
4. Now identify the beast based on its menu.
So: boar, elk, acorns, nuts, grass, ants, raspberries, honey.
(they guess, a bear appears on the screen)
Telegrams
I am a very interesting animal. Only I know how to build dams on rivers and streams, lay canals in the forest and, like a real lumberjack, cut down thick trees and build huts for housing. I’ll find an aspen or willow tree and start gnawing at the tree from all sides. I carefully cut up the fallen tree: I separate the branches, gnaw the trunk into several parts, and then I float it all down the water to the hut and put it in large piles. The pond will freeze, and I will sit in my hut and happily gnaw on the bark and young branches of trees. (Beaver)
I'm a very careful animal. I hunt at night, so it’s not easy to see me. My body is covered with silver-gray stiff stubble. Yellowish-white stripes stretch from the nose to the back of the head, and a black stripe runs through the eyes and ears. Closer to autumn, I begin to gain fat - to prepare for winter. Although I look clumsy, I deftly catch rodents, frogs, lizards, and dig up worms. I destroy a lot of cockchafer larvae. By the time it gets cold, I’ll accumulate so much fat that I can go to bed for the whole winter! (Badger)
Animals escape from enemies in hollows, in snow, in burrows. And I don’t know how to do any of this. I have a lot of enemies. And yet I live, I don’t grieve. My nose, sensitive ears, fast legs and inconspicuous fur coat help me out. It’s not for nothing that my eyes are “slanty” - I see with them not only forward and to the sides, but even a little backward. The ears also turn in all directions - there is no need to turn your head in vain. In the fall I shed: instead of gray fur, snow-white fur grows. I feed at night - it’s safer this way - on tree branches and bark from their stems. (Hare)
5. The game is called “The Birds Have Arrived.”
The presenter should only name the birds. If he makes a mistake, the fans clap their hands.
- Birds arrived: pigeons, tits, flies and swifts. (Clap.)
What is wrong? (Flies.) And who are flies? (Insects.) You're right. Game continues.
Birds arrived: pigeons, tits, storks, crows, jackdaws, macaroni. (Clap.)
The game starts again.
- Birds arrived: pigeons, martens. If the children do not pay attention to the martens, the leader announces the score:
One zero and my favor. Martens are not birds at all.
Game continues:
- Birds arrived: pigeons, tits, ostriches, siskins.
If children do not react to ostriches, another penalty point. After all, ostriches have almost completely lost their wings and they will help them fly.
Game continues.
- Birds have arrived: pigeons, tits, lapwings, siskins, jackdaws and swifts, mosquitoes, cuckoos, (Clapping.)
Birds have arrived: pigeons, tits, jackdaws and swifts, lapwings, siskins, storks, cuckoos, scops owls, swans, starlings... Well done, all of you!
6.Filwords.
Children must solve riddles. Words in fillwords can be read up, down, right, left, and even at an angle, but not intersect. Who will find the most clues faster?
and yuzh k o k o r t
o s e k sh i c o m
l o l r k a s c b
k sh v o l i o a a
o a e r b k b a r
back of the people
a b a i n i a n
6. To summarize our game today, I would like to test your knowledge by answering questions.
20 |
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a |
1st student.
We love the forest at any time of the year,
We hear the rivers speaking slowly...
All this is called nature,
Let's always take care of her!
2nd student.
In the meadows there are sunny-colored daisies,
Such that it is brighter to live in the world.
All this is called nature,
Let's be friends with nature.
3rd student.
Raindrops are flying, ringing, from the sky,
Smoke swirls at the dawn of fog...
All this is called nature,
Let's give our hearts to her.
4th student.
We dance the farewell waltz with the wind,
The evening star is trembling in the window.
All this is called nature,
Let's love her always.
TASKS
Fox.
Hello guys! Not many animals can boast that they have a middle name. But we have it! Where is it from?
They say that 600 years ago there lived Prince Patrikey Narimuntovich, famous for his cunning and resourcefulness. Since then, the name Patrikey has become equivalent to the word “cunning”.
In fairy tales, the fox is the most cunning. But in fact, I am no more cunning than many other animals. If it weren’t for my keen eyes, keen hearing, and most importantly, amazing sense of smell, then no cunning would have saved me from wolves and hunting dogs. To catch a frog, I don’t need any special cunning.
And I find my main prey - voles - without any tricks. My nose and ears help me. It is difficult for us to catch up with a hare, so the talk that foxes destroy many hares is incorrect. Unless we accidentally run into a scythe or come across a bunny.
Squirrel.
They used to call us "skiruida". Skia is a shadow, aura is a tail. Beautiful, is not it? Most of all we love tall, dry and dense forests.
Sometimes we live in old crow's nests that we repurpose for ourselves. But for permanent housing, we build the nest anew. I'll tell you a secret: each squirrel has 3-4 nests.
We have sharp claws. The tail serves as our rudder, and if we jump down, it serves as a parachute. Sometimes we jump from top to bottom by 4-5 meters. We know how to swim, but we don't like to swim.
Twice a summer we have baby squirrels. They are born blind. We feed them milk. When the cubs begin to leave the nest, the whole family plays and frolics. But we have many enemies and we need to be very careful.
Wolf.
We wolves are strong, resilient, and smart predators. We have excellent vision, keen hearing and an amazing sense of smell.
In the summer we live in pairs and raise the wolf cubs that emerge. Both parents take care of them. While mom feeds them milk, she doesn’t go anywhere; dad brings her food.
In winter we gather in flocks. Mom, dad and young wolf cubs. There can be 6-10 wolves in a pack. Iron discipline reigns in the pack - everyone obeys the leader unconditionally.
Endurance helps us survive. We may not eat for many days, but at the same time we do not lose strength and shape. We only attack sick animals so that the disease does not spread to others.
Bear.
We bears are cunning, careful, powerful and dexterous predators. If necessary, we can carry a load of 400-500 kg. And run at the speed of a racehorse. We attack people only if we are greatly annoyed, frightened or injured.
In February, our cubs are born. The weight of one bear cub is 500-600 grams. But to look after them, the bear needs a nanny. The bear family has its own nanny - one of the older cubs. Such nannies are called pestuns.
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Salt (). Devdem ()
Wire (). Baobchak ().
bocasa(). Shaugyal ().
and yuzh k o k o r t
o s e k sh i c o m
l o l r k a s c b
k sh v o l i o a a
o a e r b k b a r
back of the people
a b a i n i a n
1. At the threshold he cries, hides his claws. He will quietly go into the room - purr and sing.
2. He clothes people with his wool.
3. I dig in the ground with my little snout and swim in a dirty puddle.
4. I am the best caretaker at home and have been known to everyone since childhood.
5. They saddle me and I run, but I can also carry loads,
6. “Meh” and “meh”, but on her own mind.
7. People ride on me and carry luggage. I can even walk in a waterless desert.
8. You can easily name who gives us milk.
9. Long-eared and gray, albeit stubborn - who cares?
10. I look a lot like a hare, but not a hare by the way.
Please tell me where the windows of your house face?
Does the sun wake you up in the morning, breaking through the window?
Or does the sun see off the evening with gentle rays, softly reflecting in the windows of your house?
Of course, the picture of sunrise and sunset that we know depends on which side the windows of our house face. If you do not take into account cloudy weather when the sun is simply not visible, then meeting the sun at dawn and seeing it off at sunset occurs regularly twice a day - in the morning and in the evening.
Example: Move your mouse across the image from left to right.
A little complicated?
Then here: Time of day for children +3 to >7
What is the time of day?
A day is a cycle of time during which the sun, rising from the east, passes across the sky and sets in the west, then, when night falls on our half of the earth, the sun makes a revolution from the other part of the planet and rises again from the east.
A day lasts exactly 24 hours. Each hour consists of 60 minutes. Every minute of 60 seconds. Accordingly, a day = 24 hours = 1440 minutes = 86,400 seconds. For convenience of notation of time, two formats are used:
- 12 hour time format- time until noon from 0 hours 00 minutes to 11 hours 59 minutes (a.m.) and afternoon from 12 hours 00 minutes to 11 hours 59 minutes (p.m.). This time format is established in England, Ireland, France, Greece, Turkey, and is also used in Australia, Canada, the USA and the Philippines.
- 24 hour time format- from 0 hours 00 minutes to 23 hours 59 minutes. The most common time format used in Russia and many other countries of the world.
How does the change of day and night occur on earth?
In addition to the rotation of the earth around the sun (calendar year), the globe rotates on its axis. A complete revolution around its axis occurs in 24 hours, which are called days.
At the same time, being on the surface of the Earth, we do not feel the movement of the globe, but can only observe it based on the apparent movement of the sun and stars relative to the Earth.
Conventionally, the time of day is divided into several parts:
- Morning- begins with the dawn of the sky in its eastern part and the sun rising over the horizon.
- Day- the movement of the sun across the sky from east to west.
- Evening- sunset in the western sky and the gradually fading colors of the sunset.
- Night- Night time. At this time, the sun passes on the other side of the globe relative to us.
Since the Earth consists of continents located on both sides of the globe, the time of day in each part of the Earth is different. So, if the night is still lasting in New York, then in London it is already morning, in Moscow it is midday, and in Petropavlovsk-Kamchatsky it is already evening.
Interestingly, until recently it was believed that the movement of the globe around its axis was uniform, however, later scientists calculated the inaccuracies and it turned out that unevenness in rotation was still present. These irregularities are associated with a slight oscillation of the globe during rotation (conventionally, the rocking of the Earth, in terminology - nutation), but these changes are so small (less than 0.001 s) that they are not taken into account in compiling the calendar.
Changing the time of day
Many photographers tried to capture the change of day and night. By taking many pictures in a row from one position, it was possible to trace the smooth movement of the sun across the sky, see the movement of the stars, and get beautiful videos of sunrise and sunset. Features of time-lapse photography are when a camera mounted on a tripod in a stationary position takes a series of photographs at certain intervals over a long period.
If the length of the day is constant, then the duration of the components of the time of day varies depending on the time of year. This is due to the tilt of the earth and the movement around the sun along an elliptical path. So in summer, daylight lasts longer than night, and in winter, on the contrary, the night is longer than the day.
Moreover, in different parts of the globe the length of day and night is different. For example, in the Crimea it gets dark quickly in the summer, the night is dark, and in St. Petersburg June is famous for its “white nights”, the sun sets not far below the horizon and therefore the nights seem bright.
Different times of day look and feel different. This is connected with the biological (internal) clock by which a person is accustomed to living (day - wakefulness, night - sleep) and with the variety of color contrast, as well as with mood. By the morning, strength increases, the day is spent in study, business, work, and in the evening there is fatigue, a gradual withdrawal from work, rest and sleep.
The change in time of day was painted by the artist Nikolai Petrovich Krymov in an educational landscape entitled “Changes in the landscape in tone and color at different times of the day.”
For the landscape, a simple motif was chosen - a house near the forest, a diagonally leading path that gives volume to the picture, a field and the sky, sometimes people passing along the path came into view, which gave the picture life. The landscape was captured 9 times at different times of the day, where the artist clearly showed how the landscape, colors and colors change at dawn in the morning, when the shadow from the sun moves during the day, at sunset in the evening and at night.
The entire plant and living world of nature adapts to the rhythm of the changing time of day. In the morning the plants bloom, in the evening the buds close. The human world also adapts to the changing time of day. The most common work schedule, lesson schedule, work of educational institutions and entertainment centers, and even radio and television programs are compiled depending on the time of day.