What is the weather?
The weather is a combination of air temperature, clouds, precipitation, wind.
The weather is rainy solar cold wind dry dry dry
What words do not characterize the weather? Cold Small Rainy Dry Narrow Sunny Short Wide Windy Large Warm
Air temperature Feeling heat and cold
From the Greek "Methor" atmospheric from phenomena and "Logos" - science gradually a person learned the reasons for the weather. They are associated with changes in the atmosphere. There was a science meteorology - science about earthly atmosphere The phenomena occurring in it. The data of this science show that the weather in the city or village depends not only on local conditions, but also is associated with the state of the atmosphere of the whole land.
Cloudy Clear Partly Cloudy Cloudy
Rain rain hail snow
The wind is the air that comes in motion. Strong and dangerous winds - Hurricane, Typhoon, Tornado. Quiet winds - breeze, monsoon.
2 in 3 t 4 g 6 5 o b p 7 o s a d k g 8 o d a 1 mert and i t e r o l o g i t e p response m p e r a t u r a o z A and h n o s t l is unknown, the temperature of the combination where it lives. I wondered, he harded, from quantityally friendly. SeaNayuk about the weather snow, trees neut. Air, rain, clouds to uncommon to help clean, gone. Everything was rinsed and hail with N about rolls the kind, - depends on the gardens ... witness the gardens trembling. precipitation, windscreen us .... - by …. This is a thermometer. And we say the sky: mischievous, and ... leaving. Call did not pour. All districts
| Middle temperature (° C) | -9.2 | -8 | -2.5 | 5.9 | 12.8 | 16.8 | 18.4 | 16.6 | 11.2 | 4.9 | -1.5 | -6.2 |
| minimum temperature (° C) | -12.2 | -11.3 | -6 | 1.6 | 7.5 | 11.7 | 13.7 | 11.9 | 7.1 | 2 | -3.6 | -8.7 |
| maximum temperature (° C) | -6.2 | -4.6 | 1.1 | 10.3 | 18.1 | 21.9 | 23.2 | 21.4 | 15.3 | 7.9 | 0.7 | -3.6 |
| Middle temperature (° F) | 15.4 | 17.6 | 27.5 | 42.6 | 55.0 | 62.2 | 65.1 | 61.9 | 52.2 | 40.8 | 29.3 | 20.8 |
| minimum temperature (° F) | 10.0 | 11.7 | 21.2 | 34.9 | 45.5 | 53.1 | 56.7 | 53.4 | 44.8 | 35.6 | 25.5 | 16.3 |
| maximum temperature (° F) | 20.8 | 23.7 | 34.0 | 50.5 | 64.6 | 71.4 | 73.8 | 70.5 | 59.5 | 46.2 | 33.3 | 25.5 |
| Roll of precipitation (mm) | 43 | 35 | 33 | 42 | 49 | 78 | 89 | 76 | 63 | 61 | 57 | 53 |
There is a difference of 56 mm precipitation between the arid and rainy month.
Weather is a combination of air temperature, clouds, precipitation, wind
The average temperature varies during the year by 27.6 ° C. Useful advice About reading climate table: For every month, you will find data on precipitation (mm), average, maximum and minimum temperature (in degrees Celsius and Fahrenheit). The meaning of the first line: (1) January (2) February (3) of March (4) April (5) May, (6) June (7) of July (8) August (9) of September, (10) October (11) November (12) December.
The origin of the word weather
weather. The general Slavic word is returned at the end of the year (see). The initial meaning of this word is " good weather"(Therefore, it is a parallel noun bad weather ).
The origin of the word weather in etymological online dictionary Krylova G.A.
weather. The root is the same as for the "Flight" (see). Initial value The words "weather" was " good time"," Loss "; Not because of the "bad weather" call bad weather.
But in the future, the same word also contained the opposite meaning: in the famous song Volga ("time was in the game, the weather goes ...") means "North wind with rain and snow". Sometimes such events occur in words.
The origin of the word weather in the etymologic online dictionary USPENSKY LV
weather. Commonwealth.
Pri. derived disappeared year (Compare Czech. Income "Bad weather" and so on.
What is the weather forecast - this is a combination
etc.). The main value is "good weather" (hence - bad weather). CP V Pushkin: I'm sitting by the sea, I'm waiting on time. Catch sail ships. see cold.
The origin of the word weather in the etymologic online dictionary Shan N.M.
For errors and other inaccuracies, check the cursor, press Ctrl + Enter and send it to us!
Also: the meaning of the word weather in sensible dictionaries.
Study of the weather
All meteorological stations are monitored by the state of the atmosphere. Here, based on the results of the observations, weather-mounted weather cards are compiled, which is shown in which area of \u200b\u200bthe world. What is the weather.
On these cards can be installed in which direction and at what speed are moving aerial massesWhat weather they carry.
Meteorological elements
Weather forecasts
Constantly on meteorological sites updated the weather summary over the past time; It is reported how the weather is expected in the coming day. This weather data is needed to representatives of a wide variety of professions: pilots, sailors, machinists, gardeners and many others.
Before the weather should not be predicted, but for a number of signs.
Air mass movement
Aerial masses are large air objects of troposphere, different from each other by temperature, humidity, direction of movement and other signs.
The atmosphere can be divided into huge air masses, differing from each other with their properties (temperature, transparency, humidity, etc.
d.) Depending on where for a long time They were - above the land, ocean, ice, etc.
What is the weather? Weather definition for grade 2?
Air masses can occupy many millions of square kilometers. For example, the air force formed in the Arctic has low temperature, Small content of water vapor. If such a cold air mass will move in the direction of Moscow, then we can conclude that in a few days, depending on the speed of its movement in Moscow and adjacent areas, cooling will come.
If a few days after that, another air mass formed over the Atlantic Ocean will begin to move towards Moscow, it should be expected warming and heavy snowfall, since the Atlantic Ocean in winter is relatively warm and warm air masses saturated with water vapors are formed over it. .
Artificial satellites of the Earth
Highly detailed information on the state of the atmosphere in various parts of the globe scientists get artificial satellites Earth.
Due to the rotation of the Earth around its axis, at each next turnover, the satellite seems to be able to observe a meteorological picture in new areas of the globe.
This makes it possible to very quickly and accurately determine where and how fast the storm moved, in which areas the cloudy and in which clear weather, where warm and cold air masses were shifted. If there are several satellites over the earth, you can observe the condition of the atmosphere of the entire planet, and therefore, more precisely to predict the weather. Material from site http://wikiwhat.ru
Local signs
Being weather to predict local signsbased on perennial observations.
Here are some signs of sustainable clear weather in summer time: In the morning, a clear sky, in the afternoon, cumulus clouds, which in the evening are scattered at night and in the morning quietly, in the evening abundant dew on the grass. In the morning, the wind is weak, in the afternoon intensifying, in the evening again subsides. In the evening, a fog appears in lowlands, which disappears after sunrise.
Before the rain, usually swallows fly low, smoke is sprinkled on the ground, the wind does not subscribe in the evening, in the morning "paraits" is very hot and stuffy.
Each of the listed features has its scientific explanation.
So, in clear spring and summer nights After sunset, strong cooling of the soil and plants occurs, so dew drops. A B. cloudy weather The clouds protect the earth's surface from strong cooling, and the dew is not formed.
So, if the in the evening is abundant dew, then you should expect clear weather.
Seasons
see seasons
On this page, material on the themes:
Cat report Weather forecast when they ...
Essay for 4Klass on the topic Weather
Weather and climate information for abstract
Report on Chinese weather
Report on signs of variables
Questions to this article:
What is called weather?
What local signs of the weather do you know?
Material from site http://wikiwhat.ru
Writing on the topic Weather in spring
Writing the weather in spring №1
Spring is coming and winter drives. With the arrival of March, the rays of the sun begins increasingly breaking through the clouds. Someone else you can see the ice, which is covered under the snow. Cool air recalls that winter persistently does not want to leave. On the roofs of houses is white snow.
Huge icicles hang, who are about to fall on the ground, scattering into small pieces. Cool wind pegs bare branches of trees, which are covered with white in some places.
Some time, a light frost remains on the street, which hinders the snow to melting to the end. But it continues not long.
Soon, frost retreats, the air becomes a heavily warm, spring. Snow strongly begins to melting, mixing with mud and turning into a slush. Rapidly melting icicles, falling and crashing about the ground. On bare I. crude land Young grass grows, snowdrops can be seen, which stretch the sun towards.
Green leaves appear on the tree branches, the kidneys are blown.
It takes quite a bit of time and do not know around.
The trees that were completely naked, now bloom and smell. Earth, which was snow-covered, is now covered with a thick young grass. And after the rain, ozone, mixed with the aroma of flowers and herbs, publishes an incredible fragrance. With the arrival of spring, nature is filled with nozzles, gray and cold colors, but bright, green and filled with life. But the weather remains variable throughout the spring.
That is warm as if in the summer, then cloudy and cool as in the fall.
Maja came! Air warm, spring. Even despite the sometimes the wind and rifted rain, there is no longer the same coolness. Even the gloomy sky will not overshadow all the colors of greenery and flowers. And the wind only spreads the pleasant fragrance of this beauty. The rainbow appears after a warm rain complements multicolored and beautiful flowers on the trees, against the background of a clear blue sky.
Only a white air cloud slightly sails across the sky. And in the shower so warm ...
Brief mini essay weather spring
Spring is wonderful, therefore it becomes not only warm, but also beautiful.
The lesson of the surrounding world in the 2nd class on the topic "How to measure the temperature? What is the weather? "
Despite the fact that in March it is not so warm, as in May, the air is significantly warm, than in winter. The rays of the sun are not warm yet, but still pleased with their appearance. Every day everything becomes warm, and the sky is increasingly clear. Sometimes it may be raining, a gusty wind can break, but it does not interfere with trees and bare earth becomes greens.
Mae is already warm. You can even sunbathe in the sun. spring weather Beautiful. Winter cold retreated, and the summer heat has not yet come.
Several interesting writings
1. Use the tutorial to complete the definition.
Time is a combination of air temperature, clouds, precipitation, wind.
What words can refer to the weather?
What is the weather?
Anton question suggested full list words for this. Emphasize those words that are really suitable for weather designation.
Big, small, cold, warm, hot, narrow, wide, dry, wet, rain, short, long, round, square, wind, without wind, cloudy, cloudy.
Explain (orally), which parts of time are all the words you chose.
And again the parrot prepared treasure for you. Guess them and write the names of the appearance.
Cut images from the application and place them in the appropriate framework.
Ask your neighbor to check you. After checking the paste in the picture.
Mark (Surround the circle) of those weather phenomena that you had to observe.
4. Make up and write general description Weather phenomena.
temperature
5. In the text "How to predict time" (p. 34 in the textbook) Write to the words that indicate scientific observation Over time. Open (oral) the value of each of these words.
meteorology
Satellite meteorological satellites
Try to check comments from your own people. If the sign is confirmed, close the circle with a blue pencil, if not - red.
Optionally, you can find other signs of weather in additional literature, on the Internet.
Record from 2 to 3 of them and try to check.
If the morning is fog, it will be clear during the day.
Sparrow explosion in dust from rain.
OS "School 2100". The world. Grade 2.
Subject: Weather and climate. The weather, its components (air temperature, cloudiness, precipitation, wind). Practical measurement of air temperature with thermometer.
Objectives: - to acquaint the weather as a state of the atmosphere at a certain time in certain place;
Learning to describe weather using terms: air temperature, wind power, cloudiness, precipitation;
Predict the weather, taking into account the climate of this area;
Teach children to use natural science knowledge in everyday life To ensure the safety of vital activity, health, environmental protection.
Equipment: Street I. room thermometers, thermometer model, presentation, textbook "The world around us. Grade 2, markers, A3 sheets, leaves, cards.
Type of lesson: combined
During the classes
Organizing time
Greeting partners on the shoulder, in the face.
Checking homework
The structure of the Kuiz-Kuiz-Treid (Quiz.- Quiz.- Trade.) – "Polls - Exchange Cards" is a training structure in which students check and train each other through the material passed using cards with questions and responses on the topic.
Stand, slide chairs for security, raise your hand and find the nearest pair. 1 student asks another - asks a question (prepared at home, with the answer). 2nd answers. 1 The student helps with difficulty or praise with a positive response. Then the disciples are changing roles. Pupils exchange cards and thank each other. (Repeat 2-3 times) The student begins above the growth (the little girl is shorter, the eyes are lighter).
Thank you! You have been well prepared for a lesson. Well done! Praise each other. Take your places.
Actualization of knowledge.
What kind of precipitate you know? (Children's responses.)
New topic.
Listen and add a poem.
Why are there puddles everywhere?
Mom umbrella takes his own.
Why? Why?
Because ... (rain goes).Slide 2. The boy looks out the window
This is sellers. He is going to the street. Help him gather.
Partners 3, Take 2 white leaves on the table with a task, one leaf. Give partner 1. Before you "Wardrobe". Read the task, work with the shoulder partner.
What clothes do you cook? Color her.
On a summer day _(warm, cold) _, so Seryozha puts
On winter day _(warm, cold) _, so it will put on
Structure Single Round Robin (SingleRoundRobin.) – students pronounce answers to this question in a circle once.
Take the answer to this question in a circle once. Start part 4.
Why in these cases chosen different clothes? (Tie with weather)
Guys, do you know about the weather? Do you want to know? Why do we need to know this? Where do you need knowledge about the weather? Right. What is the topic of our lesson? (Weather)
Right. Theme lesson:The weather and its components.
Objectives of the lesson: get acquainted with the weather as the condition of the atmosphere at a certain time in a certain place; Let's learn how to describe the weather using terms: air temperature, wind power, cloudiness, precipitation.
If Seryozha is dressed not by the weather, it can get sick.Slide 3. What object is measured t.
What item can be measured by body temperature? (Digger) Can I only measure the body temperature? What device is the air temperature measuring?
There are other types of thermometers.Slide 4-8, 9 Parts of the thermometer
Consider the thermometer. It consists of a scale with a division, a glass tube with a liquid. One division is 1 degree. There is a border between heat and cold degrees.
Working with the model. Record temperature on the board. Pay attention to the degrees icon and the difference of the heat and cold indicator.Slide 10. + 25 ͦ, + 10 ͦ
Structure of SI-FINK-Unde (See- Think.- Wonder) - an object, pushing to the discussion.
Consider the practical part of the lesson.
This is a container filled with water. Lower the boat into the water. (I go to the boat. It floats.)
What did you see? (1 min - writing thoughts)
What do you think about this? (1 min)
What does it make you think? (1 min)
(Response Options: The boat sails if you blow it)
Ship sailed? What does that require? (Wind)
What is the wind?
Open the tutorial on with. 72. Consider pictures. Read the text.
After reading.Slide 11. Wind power signs
If the wind blows from the north, he means ... (north - c), and if from the east, then he ... (East - c). On the board, record signs of wind direction and power. C → → →
Fizkultminutka
The wind blows into our face.
The village was hardened.
The wind is quieter, quieter.
The tree is higher above.
To your attention the landscapes of Russian artists.Slides 12-14.
How do you determine a cloudy day or clear? (by the presence of clouds)
What can you tell about the clouds?
On s. 73 Let us read information about them.
Signs appear on the board: clearly, clouded, overcast.Slide 15. Conditional signs
Fixing
Structure of PleisMet Consensus (Placemat.Consensus) – "Card" of consent - students accept command decision.
I will ask you the topic. The team should be recorded maximum amount Ideas on your part of the sheet. Partners in turn share their ideas. If the whole team comes to consensus (" thumb Up "), one student writes this idea to the central square. You continue as long as everyone is shared by their ideas. The ideas recorded in the central square are the solution of the whole team.
Subject: "What makes the weather?"
Who will protect the work of the team.
Homework
Well done! You worked well in the lesson. They discovered something new, but learn even more reading the houses with. 70-74 and fulfill interesting tasks in working notebook on s. 22-24.
Summing up. Reflection
And now, think about who of the guys in the lesson was very active today, offered interesting thoughts, the correctly reasoned and earned the rating "5". (Options for children). Do you agree?
Who can put on the lesson assessment "4"? (Options for children). Do you agree?
If you learned in the lesson a new one, you were wondering, and you are satisfied with your answers, draw a sunkore.
If you didn't succeed in something, you have experienced difficulty, not all questions found an answer, draw a tucca.
Leave your drawings in the parking lot.
I am pleased! Thank you for the lesson! Well done!Slide 16.
Weather elements this is: temperature, pressure, wind, air humidity, visibility range, precipitation, cloudinesswhich are zonal on their manifestations and interrelated.
Air temperature directly depends on the quantity sun heatentering land, which is determined, first of all, the geographic latitude of the area: the closer to the equator, the higher the air temperature.
! More info atmospheric pressure In the abstract.
Winds
Wind - directed in the horizontal direction to move air masses. Cause of education Wind - differences in atmospheric pressure between adjacent areas ground surface. Wind characterized Speed \u200b\u200b(measured in meters per second), force (determined by the change in pressure per unit distance and is measured in the points on the Bafort scale), the direction (is determined by the side of the horizon, from where it blows). Total circulation the winds caused by the difference atmospheric pressureIncludes: monsoons, zonal transporters, cyclones, anticyclones. Local circulation The atmosphere is expressed in breezes.
Winds are made to divide on two groups: Local winds included in total circulation Atmospheric and wind pressure winds. TO local winds include breezes, mining and valley, hair dryers, boron, sirocco, samuum, etc.
IN equatorial belt Low pressure prevails, in subtropical - elevated, so the winds blow to the equator. Under the influence of Coriolis, they are rejected in the northern hemisphere to the right and have the northeastern direction, in South - left and become southeast. Winds, dining in the direction of the equator, are named passatam . IN moderate breadthah of both hemispheres dominate Western transfers ( western winds ).
During the day, sushi is heated faster than the sea, the air over it is warmer than above the water. Above the ground is a region reduced pressure , above the water - increased And the wind blows from the sea to the land. it day breeze. At night, sushu cools the fastest of the sea, over which the area of \u200b\u200breduced pressure is formed, and the wind blows in reverse side - night breeze.
Similar to the mechanism of education monsoon - seasonal winds, changing their direction twice a year: in the summer they blow dry, in winter - at sea.
! Additional Information about winds in abstract
Special winds systems: Cyclones and anticyclones - carry out intercussion exchange of air. Cyclone - atmospheric vortex from reduced pressure in the center. Anticyclone - atmospheric vortex with increased pressure in the center.
Aerial masses - Large air volumes of troposphere with homogeneous properties. Depending on the place of formation allocate four types of air masses: Equatorial, tropical, moderate, arctic and antarctic air.
Humidity and evaporation
The air of the troposphere always contains some moisture in the form of water vapor. The higher the air temperature, the greater the water vapor it can accommodate. The amount of water vapor contained in 1 m 3., called it absolute humidity. Attitude absolute humidity To the maximum possible amount of moisture in the air is called relative humidity.
In addition to moisturizing, there is a process of evaporation. Evaporability - the amount of moisture (in mm), which could evaporate from this territory in data temperature conditions. Attitude annual number The precipitation to evaporate is called the moisturizing coefficient (K). Moisturizing is redundant if K\u003e 1.; Sufficient if K ≈ 1.; insufficient, if TO< 1.
Cloud
If a warm air Cool, it cannot hold all water vapor. Its excess turns into a drop of water, which can sow on chilled objects or located in the air. So form fog And, representing a cluster in the air of the smallest droplets of water. Fog accumulates at the Earth, and the clouds are at the height.
Answer this question is not so easy. Everyone knows what it is, but not everyone can explain. To do this, we must figure out what the weather is made up.
First, it is air temperature. Everyone can say that it is cold today, warm or hot. To accurate temperature measurement, the device is used - thermometer.
Secondly, it cloud. If only individual clouds are visible in the sky and shines the sun, they say that today it is clear. If the clouds are much and they often close the sun, say partly cloudy. If all the sky is tightened with clouds and the sun is not visible, they say that today is overcast.
Thirdly, it is precipitation. These include rain, snow, hail.
Fourth, it wind. It may be weak or strong. Highly strong wind called hurricane. Different the direction of the wind. It is determined on the side where the wind blows. For example, the North Wind blows from the north, southern - from the south.
The combination of air temperature, clouds, precipitation, wind - this is weather.
Of course, we called only the basic weather terms. These can add such natural phenomenalike a thunderstorm, fog, rainbow ..
- Consider drawings and photos. Tell me what you know about these weather phenomena.
How to predict the weather?
In many places on Earth there are meteorological stations (meteorological stations), where scientists lead the weather observations. The name "Meteorological" comes from the word "meteorology" - the science of weather.
For weather observations use balloons - Probe. Sea ships are equipped with special equipment. Meteorological aircraft also use. And in space there are meteorotes.
All collected scientists are processed using computers and make up weather forecasts. Forecasts are scientific predictions. They are made up for tomorrow, for several days or weeks forward.
- Consider drawings. These devices are used on meteorological stations. Try to explain why they serve and how they work. Check yourself on the "Smart Soviet Pages". (7)
Think!
- Why do we need weather forecasts?
- What kind folk signshelping to predict the weather, do you know?
Check yourself
- What is the weather?
- How do the air temperature measure?
- What is cloudy?
- What are the sediments?
- What happens?
- How to predict the weather?
Let's make a conclusion
The weather is a combination of air temperature, clouds, precipitation, wind. Scientists lead constant weather observations and make up weather forecasts.
Why weather depend on the state of the lower layer of the atmosphere? What weather types did you observe during a summer holiday?
1. Weather.Elements and weather phenomena. The weather is called the state of the atmosphere in this place Over a short period of time (per day, week, month). Atmospheric pressure, temperature, humidity - weather elements; Sedips, wind, fog, clouds - weather phenomena.
The weather state is determined not only by one element, say, temperature or precipitation, but also through the entire totality of elements and phenomena. For example, it is not enough to define "cool". Cool weather can be windy, cloud, rainy.
Weather changed over time. The change in air temperature leads to a change in pressure, and it is to the nature of the wind, the cloudiness affects the temperature and the like. From here to give complete characteristic Weather, it is necessary to constantly observe the generation elements and phenomena (see Appendices 5, 6).
2. Air masses.The weather varies depending on the movement of the air above the ground. Weather properties are related to the nature features. The air in polar zones is strongly cooled due to the small amount of solar heat. At the equator and in the tropics, the air is very heated. Air over dry dry, over the oceans - wet.
Large plots of troposphere, differing from each other by such properties (temperature, transparency, humidity), are called air masses. Any air masses occupy millions of square kilometers above the ground.
In each hemisphere, 4 types of air masses differ depending on the place of education:
1. Arctic (in the South Polar Area - Antarctic) air.
2. Air for measured latitudes.
3. Tropical air.
4. Equatorial air.
Each of these air masses (except equatorial) is divided into continental (above the land) and marine. The air above the sea is characterized by a large humidity. IN equatorial zone Not only at sea, but there is enough moisture on land. In wetlands wet forests, like the sea, there are conditions for great evaporation. Therefore, in this area, the same hot and humid air is formed over the sea and dry.
Air masses move from one place to another. Accordingly, this is a certain weather. For example, when we have the northern Arctic air in winter, frosty weather is installed. When from the West, from the side Atlantic Ocean, comes the sea air of moderate latitudes, then the thaw comes and snow falls. Also in the summer with the arrival of southern tropical air for many weeks it is installed hot weather.
When displaced various air masses, pressure, cloudiness, temperature, humidity, air transparency are changing.
3. Weather forecast. Study of the weather is necessary for everyday life and economic activity man. Anyone wants to know the weather forecast in advance. Each person listens to the message about the weather on radio or television and tries to dress accordingly. Weather prediction ensures safety of far-sailing ships, air transport. Such a forecast is also necessary in the spring when conducting sowing, makes it possible to protect yourself from dangerous weather phenomena - Frost, hail, etc. Weather forecast is based on observations of all meteorological stations Earth and observations conducted in the upper layers of the atmosphere. Currently on globe There are over 10 thousand meteorological stations. Specialists - meteorologists of the whole world are carried out simultaneous observations on Greenwich's time.
The time of the initial meridian passing through the Greenwich Observatory near London is called Greenwich Time. The time of Astana is different from him for 5 hours.
IN polar regionsAt high mountain peaks there are automatic stations that themselves conduct observations and report their results. Special instruments, they measure the state of the atmosphere, air temperature, cloudiness, precipitation, etc.
Information on the state of the atmosphere is also coming from ships, with aircraft, missiles, meteorological satellites of the Earth.
The results of the observations are collected in each state in the weather facilities. The information received there is processed using electronic computing machines. On their basis, weather maps are created. On such maps using conventional signs and numbers, the weather status is denoted for a certain period.
Fig. 64. Conditional marks of the weather map.
Figure 64 in the enlarged form shows meteorological information applied to the weather map using conventional signs. The station is marked with a circle. The circle half is painted in black, which means - the sky is half tightened with clouds. If the sky is clean, then the circle does not paint, remains white. When the clouds are completely tightened, the whole circle is painted in black. Arrow one end on the circle denotes the direction of the wind. The wind blows from the south-east, the number of drops on the arrow shows the wind speed (m / s). Long catcher - 5 m / s, short - 2.5 m / s. On this example, the wind power is 7.5 m / s. Figures over a circle - air temperature (0 °) and pressure. Air pressure 1015.8 MB. (three last digits are recorded). The sign on the left under the station shows that it is snow.
In addition, air masses, areas of atmospheric pressure, precipitation, etc. are applied to the card. On some days, 4 such cards are. Comparing them with each other, determine where and at what speed is moving cool or warm air, which in connection with this can be expected temperature, in which direction and with what force is the wind blows, whether it is raining or snow, there will be an opportunity to form a fog and T.P. This is all shown on weather forecast maps.
Weather forecast is reported on radio, television, through newspapers. In addition, special messages about dangerous events (frost, buran, thick fog, storm) should be urgently transmitted various agencies by telegraph.
Weather on soon You can predict approximately with the help of local signs.
Signs of clear, summer - hot, in winter - frosty weather
1. In the morning, the sky is clear, cumulative clouds rises. In the evening, the clouds dissipate.
2. Solar glow before sunrise and sunset.
3. After sunset, dew appears on the grass. It turns closer to the morning, with the sunrise disappears. In the cool time, instead of dew falls out.
4. In the summer, daylight day. In the morning, the wind is weak, in the afternoon, it is weakening by night.
5. By evening and nights in lowlands are cooler than on the hills.
6. After rainy weather The wind gradually subsides, the precipitation stops, the clouds are dissipated. In summer, the night is cooler.
7. The atmospheric pressure increases.
Signs before changing weather
1. Pace clouds are not dissipated in the evening, but increase and compacted.
2. Morning and evening sunny glow of orange.
3. The difference between the night and daytime temperatures decreases. In the evening it becomes warmer than in the morning.
4. In the evening the wind does not stop, even enhances.
5. The dew and frost are not formed.
6. Air temperature in lowlands and sublime places equalized.
7. Forms light circle Around the sun or moon.
8. The atmospheric pressure decreases.
For the weather forecast, the presence of only one of the named signs is not enough, a coincidence of several are necessary.
1. What is the weather?
2. Why does the weather change?
3. What is called air mass?
4. What are the types of air masses?
5. What is needed by studying the weather?
6. How do we predict the weather?
7. Give a written description of the monthly weather, starting from the beginning school year, on your weather diaries. Was the weather constant every month?
8. On local features, predict upcoming weather. Check out the correctness of your forecast.
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