Scientific facts about autumn. Interesting facts about autumn: is it a dull time or a time of warm relationships? Autumn is divided into subseasons
TYPES OF HEAT TRANSFER.
Enough level
1. Which of the following substances have good thermal conductivity:
copper, air, aluminum, water, glass, water vapor?
Answer: copper and aluminum have good thermal conductivity
2. Which of the following substances have poor thermal conductivity:
cardboard, iron, rubber, steel, paper?
Answer: they have poor thermal conductivity: cardboard, rubber, paper
3. Hot water is poured into aluminum and glass pans of equal capacity.
Which pan will heat up faster to the temperature of the water poured into it?
Answer: An aluminum pan will heat up faster because
that it has greater thermal conductivity
4. Will regular or porous brick provide better thermal insulation for a building?
porous brick will provide better thermal insulation of the building because
that voids filled with air have poor thermal conductivity (?)
5. Which shoes make your feet feel colder in winter: loose or tight ones?
Answer: tight, because there is no air gap in it,
with low thermal conductivity
6. Which type of heat transfer plays the main role in heating water in a kettle,
standing on the stove?
Answer: the main role in heating water in a kettle convection plays
7. It is necessary to cool the water poured into the tank faster.
Is it better to put the tank on ice or put ice on the lid of the tank?
Answer:in order to quickly cool the water poured into the tank,
You need to put ice on the tank lid
During convection, warm layers of water rise upward
upon contact with a cold lid they cool down (?)
8. Which dress is less hot in summer: light or dark?
Answer: in a light dress it is less hot in summer because
that it absorbs less solar energy,
transmitted by radiation
9. Which soils, under the same conditions, warm up more strongly in the sun -
podzolic or chernozem?
Answer: Chernozem soils warm up more strongly in the sun because
that they absorb more energy from the sun's rays
10. Keep tea hot in a thermos. Is it possible to preserve cold fruit juice in it?
Average level
1. Why are the handles of taps on hot water tanks made of wood?
Answer: tap handles for hot water tanks are made of wood because
that they have poor thermal conductivity
2. In summer, ice is stored under a layer of sawdust and earth. Why?
Answer: in summer, ice is stored under a layer of sawdust and earth because
that they have poor thermal conductivity
3. In what case will a piece of ice brought into the room melt faster:
when will they simply put it on the table or when will they cover it with a woolen scarf on top?
Answer:A piece of ice brought into the room will melt faster when it is simply placed on the table(?)
4. Why are fuel storage tanks painted with “silver” paint at oil depots?
Answer:At oil depots, fuel storage tanks are painted with “silver” paint because
that light-colored surfaces do not heat up well under the influence of radiation(?)
5. Why are heating radiators indoors located near the floor and not near the ceiling?
Answer: cold air entering through the window is heavier than warm air,
and so it goes down, where it is heated by the central heating radiator
6. Which bodies - solids, liquids or gases - have the lowest thermal conductivity? Why?
Answer:Gases have the lowest thermal conductivity because
that gas molecules are located at a great distance from each other
and interact poorly (?)
7. Where should you keep a thermometer to determine air temperature -
in the shade or in the sun?
Answer:To determine the air temperature, the thermometer must be kept in the shade because
What… (?)
8. What will cool down faster: a glass of compote or a glass of jelly? Why?
Answer:a glass of compote will cool faster because
that there is less mutual attraction between molecules in it
and convection occurs faster (?)
9. Why do plants in lowlands die from frost more often than at higher elevations?
Answer:cold air is heavier than warm air and therefore sinks
in the lowlands on a cloudless night it is colder than in the higher elevations (?)
10. Why does snow melt faster in the city in spring than in the field?
Answer:In spring the snow in the city melts faster because buildings warm up well under the influence of solar radiation and transfer part of their energy to the snow(?)
High level
1. Which bodies - solid, liquid or gaseous - have the best thermal conductivity?
Answer:Solids have better thermal conductivity because
that their molecules are at a small distance from each other
and interact well (?)
2. In what bodies - liquids, solids, gases - is convection observed? Why?
Answer:convection is observed in liquids and gases because
that in them the mutual attraction between molecules is less and the molecules can move freely (?)
3. At what temperature will both metal and wood feel equally hot to the touch?
Answer: both metal and wood will feel equally hot to the touch at a temperature of 36.6 0 C because at this temperature there will be no heat exchange (?)
4. It is necessary to quickly cool the bottle of lemonade. Where should the bottle be placed for this: in the snow or in crushed ice, if their temperature is the same?
Answer: in order to quickly cool a bottle of lemonade, it must be placed in crushed ice, which has greater thermal conductivity, so the heat exchange will go faster (?)
5.When is it more convenient for sailing ships to enter the harbor - during the day or at night?
Answer: It is more convenient for sailing ships to enter the harbor during the day, when the land is warmed up faster by the sun, the heated air rises, and is replaced, from the side of the sea, by a stream of cold air - the daytime breeze (?)
6. Hot coffee was poured into the cup. What should you do to make the coffee cool faster: pour milk into it immediately or after a while?
Answer:to make hot coffee cool faster
milk should be poured into it after some time
a film forms on the surface of the coffee, which has poor thermal conductivity(?)
7. Which factory pipes are better: iron or brick?
Answer:brick factory pipes are better because
that they have poor thermal conductivity
at the top of the pipe are surrounded by a layer of cold air,
so the traction in a brick pipe is better(?)
8. When is draft in pipes better - in winter or summer? Why?
Answer:
draft in pipes is better in winter because
What …(?)
9. Why do window panes begin to freeze from below and to a greater extent than from above?
Answer:cold air is heavier than warm air and therefore it sinks down(?)
10. Will a candle burn on board the space orbital complex?
Answer: no, because convection is carried out due to the Archimedes force,
which does not occur in a state of weightlessness
11. Why do we feel warmer in a room at a temperature of 20°C?
than in water at a temperature of 25°C?
Answer:The thermal conductivity of water is greater, so heat exchange occurs faster in it,
body temperature drops quickly (?)
12. Why do many animals sleep curled up in a ball in cold weather?
Answer:The smaller the surface area of an animal's body, the less heat it generates.
gives away to the air around him(?)
13. Why is the highest air temperature not at noon, but in the afternoon?
Answer:During the day, the land surface becomes very hot due to solar radiation.
and in the afternoon heats the air by convection(?)
14. On a hot day, the dry thermometer shows 35°C.
Will the thermometer readings change if a fan is turned on next to it?
Consider two cases: a) the thermometer is in the shade; b) the thermometer is illuminated by the sun.
Answer: if on a hot day the dry thermometer is in the shade and the air flow from a fan is directed at it, then its temperature will not change
If on a hot day the dry thermometer is illuminated by the sun and a flow of air from a fan is directed at it, then its temperature will decrease because convection occurs faster (?)
15. How to set up a greenhouse? Why is the air temperature inside greenhouses higher than outside?
Answer: Greenhouses are used to protect plants from frost.
Glass frames allow solar radiation to pass through well. During the day the soil warms up.
At night, the greenhouse prevents warm air from moving upward. Therefore, the temperature in the greenhouse is higher than in the surrounding area.
Additionally:
1.For what purpose is the face sometimes smeared with thick cream in winter when it’s very cold?
2.The longer an enamel kettle is in use, the slower the water boils in it. Why?
3. Why do locals in Central Asian countries wear papa hats and cotton robes during extreme heat?
4. Why is the frost stronger on clear winter nights than on cloudy weather?
4. If a clear night is expected in spring or autumn, gardeners build fires that produce a lot of smoke,
enveloping plant. For what?
5. There is a known case when a parachutist with an open parachute, instead of going down, went up. How could this happen?
6. Using a thermal imager (night vision device), you can detect various bodies,
even slightly heated, regardless of whether these bodies are illuminated or are in complete darkness. What physical phenomenon is used in these devices?
7. In what case will a heated part cool faster: if it is placed on a wooden stand?
or on a steel plate?
8. Which areas of the earth’s surface heat up more strongly in sunny weather:
plowed field or green meadow, dry or moist soil? Why?
9. Why does it feel cold even from well-sealed windows in winter?
10. In which kettle – white or dark – will water boil faster?
11. Why is there more draft in furnaces with high pipes than in furnaces with low pipes?
12. Why does a stone floor seem colder than a wooden floor in the same room?
13. Why do experienced housewives prefer to fry in cast iron pans?
and not on aluminum ones?
14. Which type of heat transfer is accompanied by the transfer of matter?
15. Why is the highest temperature not at noon, but in the afternoon?
16. The Earth continuously radiates energy into outer space. Why doesn't the Earth freeze?
17. In what case is energy transmitted by radiation? Explain with an example.
18. Why do aspen leaves sway in calm weather?
19. Why does a thin plastic film protect the plant from the night cold?
20. Why, when the stove starts heating up in the room,
is there a decrease in temperature? what... and purpose, That's why What temperature air at floor level...
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PLANNING SPRING WALKS
Observations of inanimate nature
Snow observations.
It's interesting to watch the snow melt. Draw the children's attention to the fact that snow melts differently in different places. Where does snow melt first? At the tree trunks. Why? Because the tree trunks are dark. Dark colors absorb more sunlight than light colors; Dark-colored objects heat up more than light-colored objects. Dark tree trunks heat up more than white snowdrifts, so the snow around the trees melts faster. Dirty snow also melts faster than clean snow.
You can tell the children that snow in the forest and in the city also melts differently. If the children have to go to the forest on weekends, ask them to pay attention to the snow in the forest. Brainstorm with your children about why snow melts faster in the city than in the forest. Why can you find islands of unmelted snow in the forest even in late spring? Because in the city the air temperature, as a rule, is always higher than in the forest (due to the many cars, due to the large number of people, various heating stations, factories and factories that produce heat). In addition, there are many trees in the forest that provide dense shade; Through the interlacing of branches, it is more difficult for the sun's rays to penetrate to the ground, and therefore the snow under the trees in the forest takes longer to melt.
The snow in the spring becomes spongy, it is not at all like winter snow. You can explain to children why this happens: from the heat of the sun, snowflakes on the surface of the snow melt one after another and turn into water, the water flows down, so depressions form in the snow.
Observations of the sun.
Why does the sun shine brighter in spring than in winter? Children often ask this question. You can explain to children that in the spring our planet Earth is turned towards the sun, so it receives more sunlight than in winter, they give more heat and light. Therefore, in spring it is not only warmer, but also the days become longer and the nights become shorter.
Invite children to touch the sleeves of a dark and light coat and say which one is warmer: children can see for themselves that warm light absorbs more sunlight than light light. That's why wipers scatter snow and ice along dark paths - this way it melts faster. For the same reason, snow melts fastest around dark tree trunks.
Cloud observations.
In spring, many cumulus clouds form in the sky. You can explain to children the mechanism of their formation: steam rises from melting snow under the influence of sunlight. At the top, where the air is much cooler than near the ground, the steam turns into tiny ice crystals, and from them clouds are formed. The more snow melts, the more such cumulus clouds appear. They change shape frequently. Children love to fantasize while looking at clouds, imagining who they look like.
Observations of melt waters.
In spring, many streams form. Where do they come from - ask the children about this again. They should already know that snow is frozen water, and when it melts it turns back into water.
Water always flows down from high places. Children will be able to see this for themselves when
they will make grooves for their boats. The water flows somewhere through a grate placed on the asphalt. Where? You can explain to children that water flows into special receivers, and from there it flows into city rivers. Wildlife observations
Plant Observations
Observations of buds on trees.
In winter and early spring, the buds are small, as if shrunk from the cold. As the sak gets warmer, the buds seem to swell, become larger, and then open. First, the tiny tip of a green leaf appears. If at this time the bud is cut and unfolded, then inside it you can see a tiny leaf, as if folded many times. Small young leaves are light green, sticky, sticky, fragrant. You can explain to children that in the spring, when it gets warmer, the ground becomes moist, “all the necessary conditions for plant growth are present. At the same time, you can repeat with the children what these conditions are:
Sunlight,
Grass observations.
Young grass appears much earlier than the first leaves. It hatches from the ground in thawed areas even when not all the snow has melted. The first flowers also appear before the leaves bloom. These are yellow coltsfoot flowers. Among the forest flowers, the snowdrop is the first to bloom. Lungwort flowers are beautiful, they change their color: at first they are red, then purple, and then they turn blue. On all these plants, the flowers bloom before the leaves.
Bird watching.
Spring is the time of return of migratory birds. Draw the children's attention to the fact that bullfinches, goldfinches and waxwings, which we often saw in winter, are no longer visible at the feeders. Explain that these birds flew north because they like colder climates.
Wintering birds also behave differently. Crows and jackdaws fly in pairs, looking for nesting sites and calling loudly. The buntings changed their plumage: in winter they were very similar to sparrows with gray feathers, but now their feathers are yellow. The sparrows began to chirp cheerfully, start fights among themselves, and bathe in spring puddles.
Rooks are the first to return from warm regions and immediately get to work, looking for harmful worms and slugs in thawed areas. They are tidying up their large, strong twig nests that have been waiting for them all winter.
Then the starlings appear. They make nests in birdhouses. It is interesting to watch how they scurry around the opening of the birdhouse, pulling blades of grass and thin twigs there. Sometimes real battles break out near the birdhouses between the arriving starlings and the sparrows that lived in the birdhouse in the winter while the starling owners were away.
Insect observations.
The first spring butterflies are yellow lemonworts, variegated wrens, and dark mourning butterflies. They appear as soon as warm weather sets in. These butterflies overwinter as adults in secluded places, so they are the very first to appear. Those butterflies that overwinter as pupae will appear much later.
It will be interesting for children to watch how butterflies suck nectar from flowers with their long proboscis, as if through a straw. Butterflies have a very beautiful pattern on their wings - one of the most beautiful that nature has created. But you cannot grab butterflies by the wings, since they are covered with delicate pollen, which can be easily wiped off, and after this the butterfly will not be able to fly.
You can explain to children that butterflies lay eggs, from which caterpillars then hatch. Caterpillars are serious pests of plants - they eat their leaves. Later, the caterpillars entangle themselves with a thread that is released from the abdomen and. turn into pupae.
While observing beetles, help children identify the common features of their structure: 6 legs and 4 wings.
Weather observations.
Continue to teach children to analyze the weather with subsequent marks in the nature calendar.
Teach children to find a connection between the activity of the sun's rays and the awakening of life in plants, insects, and birds.
Observe with the children on which side of the veranda or roof more icicles form, and on which side they melt faster. Analyze on which side the snow melts faster, where the first thawed patches form.
Observe how much longer the day has become. This is explained by the fact that the Earth now receives much more sunlight than in winter.
Warmer weather in spring is due to the same reason. The Earth is so turned towards the Sun, more sunlight falls on it, which means it receives much more heat in spring than in winter.
In early spring, in the mornings, an ice crust forms on the surface of the snow - present. Together with the children, we will try to answer the question - why does crust appear on the snow? Because during the day the sun warms up, and the top layer of snow melts, but at night it is still frosty, and the melted snow sets again and freezes - and this is the ice crust.
Children are very interested in folk signs. They love to observe and check whether they are actually being fulfilled, whether they can predict the weather, and how accurate they are.
Folk signs
Long icicles - for a long spring.
The early arrival of rooks and larks means a warm spring.
I saw a rook - welcome spring.
The swallows have arrived - soon the thunder will roar.
If there are a lot of cobwebs flying in the spring, the summer will be hot.
Frogs don't croak until the first thunderstorm.
Late flowering of rowan - for a long autumn.
Activating the dictionary
Spring vocabulary: thaw, thawed snow, icicle, drops, streams, melted snow, puddles, migratory birds, swollen buds, spring equinox, first flowers and leaves, awakening of nature.
Together with your children, you can discuss why in the folk calendar the spring months have the following names:
March is the morning of the year, dropper, protalnik, winter competition.
April - snowman, Aquarius, birch tree.
May - grass, pollen.
Labor on site
1 Scattering snow, placing it in dark places so that it melts faster. Chipping ice on the veranda. Breaking off icicles - explain to children why this is necessary (so that a fallen icicle does not fall on someone's head).
; We remove last year's yellowed and dry grass to make it easier for young green shoots to make their way to the sun. Explain to children why you can’t burn last year’s grass without first collecting it in a pile. If you set fire to old grass right where it grew, then the young shoots will also die from the fire.
1 Putting things in order in the area: collecting papers, rubbish blown by the wind, sweeping the veranda.
We collect sand in the sandbox, fill it with new sand, sweep the sides of the sandbox.
: We build dams and canals for homemade boats.
Role-playing games on a walk
“Young Captains” is a game with homemade and toy boats and ships.
“Building a Canal” is a construction game for draining water from a site into special dams.
“We are shipbuilders” - children learn to make boats from wood chips and paper.
“Spring trip to the forest” - children go on an imaginary walk into the forest, guided by the proposed plan or oral description.
Didactic games
“Which tree is the leaf from?”, “Birds of passage” - teach to recognize birds by description, “Fun classes” - exercise in forward and backward counting”, “12 months”, “Say the opposite” and “Say it differently” - selection synonyms and antonyms, “Grandma Vodyanoy” - recognition by touch. :
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"It's a sad time! Ouch charm!
Your farewell beauty is pleasant to me..."
A.S. Pushkin
As you know, the great Russian poet preferred autumn to all seasons for its fading beauty and splendor.
Surely there are many more lovers of this time year - real"golden era".
Ouch charm!
And although I am not one of them, I consider it necessary to devote time to autumn, because it has so many mysteries, so many riches, so many interesting and surprising things for an inquisitive mind! So I called my article -
- and I suggest you familiarize yourself with it.
- Autumn has always been considered an important time of the year, because it was at this time that people summed up the results and assessed the results of their work done throughout the year. It’s not for nothing that from time immemorial they said: “Chickens are counted in the fall.”
- Autumn is the time of fruit ripening, the time of abundance of nature's gifts, which the population then had to feed on all year round. People's lives, in the most literal sense, have always depended on a good autumn harvest. That "hunger" not auntie” don’t explain to anyone need to.
- It is the connection between a good harvest and survival that has led to the worship of various gods since ancient times. Every nation, be it Ancient Egypt, Ancient Greece and others, had its own gods, some of them very bloodthirsty. So the ancient Aztecs had to sacrifice even people to them. And I really like the ancient Greek myth that explains the arrival of autumn, both sad and beautiful, that I will definitely devote a separate article to it.
- Autumn is like the end of the year. But it wasn't always like this. In Rus', for a long time, the first of September was considered the beginning of the New Year. This was the case until the decree of Peter I, in 1699. And only in 1700 in Russia they began to report to the new year from January 1st.
- Autumn has long been a time for weddings. Firstly, at this time the main work of the peasants was completed, and they could rest a little, relax and find time to celebrate the most important event in human life. Secondly, autumn is the most nourishing time of the year, which made it possible to feed guests deliciously.
Autumn is the time for weddings!
- Today, scientists recognize that autumn is the ideal time to get married. In people, regardless of gender, sexual feelings intensify, testosterone levels rise, which makes it easier to find and bring together partners. Scientists believe that such human behavior is the result of a deep-seated mating instinct that remains in humans (similar to the autumn “rutting period” in animals), which in turn is triggered and intensified with the beginning of a reduction in daylight hours.
- In autumn, male Djungarian hamsters' testicles increase 17 times in size, indicating readiness for mating.
- Statistics indicate a decrease in the number of divorces also in the autumn (most separations occur in the summer). Scientists suggest that with the onset of cold weather, men tend to spend time with their family or with their lovers, where they are warm and comfortable.
- It’s interesting that even on Facebook profiles, “Single” statuses change to “Dating” or “Engaged” statuses in the fall more often than in other seasons.)))
- From time immemorial it was noticed that it was autumn children who were distinguished by strong immunity and had excellent health. And all because expectant mothers spend the last months of pregnancy in the spring and summer, when their diet increases the content of vitamins coming from fresh herbs, berries, fruits, and vegetables. Babies born in the fall have a great start to a long and active life.
- In autumn, such an interesting phenomenon occurs as the day of the equinox, when the length of the day (light time of the day) is equal in time to the night (dark time of the day). Usually the equinox occurs on September 22-23.
- On this day, everyone has the opportunity to surprise others with an interesting trick. A hard-boiled egg (some sources say that you can’t hard-boil it, just boil a soft-boiled egg) can be placed on its tip on this day, and it will be able to stand like that for some time. Try to place the egg vertically on other days of the year - nothing will work!) )) (outside the brackets: if such a disaster is happening to eggs, then what about the human psyche? Isn’t this where autumn and spring exacerbations occur?)) ) )
- I myself have not yet conducted an experiment with an egg, but I definitely want to check it.) )) And I will try to carry out the test on the day of the spring equinox (closer in time), and time it to coincide with the release of the next Intellectual competition on the site, which, by the way, has already been announced in the month of October 2017.
- What else is associated with autumn? Bird flights to warmer lands. The Arctic tern is named champion, covering a distance of 71,000 km per year (the length of the equator is about 40,000 km). Before her, the gray petrel (64,000 km) was considered the champion. But scientists have not yet understood why terns fly so far: from the Arctic to the Antarctic and back?
- Surprisingly, autumn is simultaneously a symbol of abundance, on the one hand, and aging and death, on the other. And, it would seem, live and live...if there is abundance...) )) What an illogical duality!
- Another interesting fact: it is in the autumn-winter period that people begin to gain weight. It would seem that there is nothing strange, since you have to move and work less in cold weather. But it turns out that the reason lies in the lack of solar vitamin D in the fall, which takes part in burning fat.
- Another interesting fact is that women experience increased hair loss during cold periods. And scientists see the reason that in winter the need to protect the scalp from the sun disappears. No need for protection - no need for increased growth and strengthening! It is interesting, by the way, that in the human body the growth rate of hair cells is second only to bone marrow cells.
- One of the interesting facts is the annual Oktoberfest festival held in Germany.
This beer festival was first held in 1810, in connection with the wedding of the Crown Prince. Festival guests manage to drink about 5 million liters of foamy drink in three weeks!
I think that there are many more interesting facts about autumn.
5 years ago, 08:10
Autumn is associated with falling leaves, romance and showers.
This is the season of completing what started in the summer. But all beginnings also take place in the autumn months. What is remarkable about this colorful time of year?
Especially for our readers, we have collected the most interesting facts about autumn.
Autumn is divided into subseasons:
Autumn has other names: “Autumn”, “Wet weather”.
In the old days, autumn was celebrated three times:
1) On Semyon Day, September 14 (September 1, old style) - the day of remembrance of Simeon the Stylite - Semyon the Flyer;
2) On the Nativity of the Virgin Mary, September 21 (September 8, old style) - a holiday of women and women’s work;
Indian summer is divided into:
According to the phenological calendar, the beginning of autumn is associated with the departure of birds, the fall of yellow leaves, and the first frosts.
There are two periods:
1) From the first frost to the end of leaf fall;
According to the Bianchi Forest Calendar, autumn begins on September 21 - the first month of autumn, the “Month of Farewell to Migrants”, the second month is the “Month of Full Pantries” and the third is the “Month of Winter Guests”.
It is during the period of leaf fall and rain that the human psyche is susceptible to change. There is a feeling of calm and readiness for new events. At the same time, psychoanalysts note that in the autumn season the feeling of fear noticeably dulls.
As psychologists note, autumn is the time for desperate actions. At this time of year, people strive to start something new, change their lives, and are ready for extreme actions.
This point may have nothing to do with the second, but the largest number of weddings take place in the fall. At the same time, fasting, “unlucky dates” and superstitions do not prevent lovers from walking down the aisle. The autumn months predispose to a happy marriage.
Autumn is a period of sexual activity. Research by scientists suggests that it is during this season that people experience a peak in sexuality and hormone production. This is due to a decrease in temperature after a hot summer.
Fallen wet leaves on the road increase the braking distance of a car by almost 10 times.
People born in autumn have good immunity and good health. This is due to the fact that a woman in the last trimester of pregnancy eats the most fully. Chicago scientists also found that people born in the fall, unlike others, have the greatest chance of living a whole century.
All openings, fairs and initiatives are typical for the autumn period. In September, children go to school, and most adults go to work. Businessmen are also trying to postpone exhibitions, conferences, tenders and conventions to September-November. This period is the most fruitful;
During this season of the year, many people experience “autumn depression.” This phenomenon is associated with the end of the holiday period and sunny days of summer. But such depression is not observed in everyone, but only in lovers of heat and summer. The term “autumn depression” is really relevant for this period of the year.
About autumn we can say that at this time of year you need to wear a coat and that in temperate latitudes it often rains. But what else can you say about autumn?
Autumn marks the transition from summer to winter as the days begin to get shorter and the leaves on the trees begin to turn bright colors and fall off. Here are some interesting facts about autumn.
In autumn there is one day in which day is equal to night. Surely you have heard about this phenomenon. It is called the autumn equinox.
Erect balls? There are only two days a year when you can place an egg on one of its ends and it will not roll. These two days are the day of the spring and autumn equinox. Experiment. Take the egg. It should not be hard-boiled. Place the egg on a hard, flat surface, on the largest tip. Carefully remove your hands and after this the egg should remain in its upright position.
Not all parts of planet Earth experience autumn. For example, if you live on the Equator or in the central part of the planet, then you will not see autumn. Autumn begins in September in the northern hemisphere, but in the southern hemisphere, autumn begins in March.
What happens to the plants? Plants are known to use sunlight to create and provide nutrients to themselves while maintaining their green color. As the days get shorter and plants receive less sunlight, they stop producing those nutrients and don't show off their different colors. They do not turn red, yellow or brown in part and due to waste that comes from the soil while there is no sunlight.
Autumn is a treat for animals. Squirrels, for example, collect and hide nuts and other food in the fall. They save nuts for the coming winter, so that they can eat them when there is only snow around. It is interesting that they bury the nuts, but do not touch the sprouted ones. Birds migrate throughout the year, but autumn is the peak season for migration. The length of the flight and its speed increase.
Americans call autumn the word "fall". And it’s clear for what reasons. On October 31, Halloween is celebrated in many parts of the world, when children dress up in costumes and go to surprise people with their tricks or performances. The USA and Canada had a significant influence on the spread of this holiday. For example, it is celebrated in South America, Australia, New Zealand, continental Europe, Japan, and other East Asian countries. Commonly used for this holiday, pumpkins are carved into spooky faces during Halloween. The first who started doing this were the Greeks who ate the pulp of such a pumpkin and believed that this would increase money and material well-being.