Five characteristics of winter

The five characteristics of winter, when animals hibernate in winter, when it is cold and snowy, the snow scene is beautiful and spectacular, and people will put on thick cotton-padded clothes and gloves. Here I have sorted out the five characteristics of winter, welcome to draw lessons from and refer to, and hope to help you.

Five characteristics of winter 1 1, cold, winter is the coldest season in a year. The outdoor temperature will reach minus 10-20℃ in winter in the north, and the cold winter will cause the river to freeze. People will wear thick cotton-padded clothes, gloves, scarves and hats to keep out the cold.

2, snow, it only snows in winter, white, the air is fresh and comfortable, it is generally cold when it snows, and there are fewer animals crowing. The snow in the south is like small particles, and the snow in the north is like tearing cotton, which is big and dry. Ice will hang on the low eaves.

3. The days are short and the nights are long. Compared with summer, winter is characterized by short days and long nights. The day from winter solstice is the longest night and the shortest day in the northern hemisphere. Since the winter of the solstice, it has entered the "cold weather". After the solstice of winter, day and night will gradually become the same length.

4. Animals hibernate. When cold weather comes, animals can't maintain the constant body temperature needed for normal activities, so they have to find a place to hide and hibernate and spend the cold winter.

Extended data:

In winter, the light and heat energy of the sun will enter the least season of the year. Because there is not enough light and heat energy in the northern hemisphere, the air in high latitudes will be cooled down and accumulated, and the last cold wave will go south.

After winter, a relatively stable winter circulation has basically formed in East Asia. The subtropical high has retreated to the south of 20 degrees north latitude in the Pacific Ocean, and the westerly belt has been pressed to the south of 35 degrees north latitude. The westerly belt will be divided into a north westerly wind and a south westerly wind on the Pamirs.

Five characteristics of winter 2 What are the characteristics of winter?

In winter, the weather is getting colder and colder, and the northwest wind is blowing. People put on thick cotton-padded clothes, gloves, scarves and hats.

Goose and swallow fly to the south for the winter. The river is frozen and small fish are playing underwater. It began to snow, and the children were playing snowballs and having snowball fights in the snow.

The willow tree has lost all its leaves, leaving only bare branches. People wrap some trunks with straw to keep warm. The grass has turned yellow. In winter, plum blossoms are in full bloom.

In winter, bears, snakes, hedgehogs, frogs and many other animals hibernate. Cats and dogs have thick hair and are very fat.

Keep the elite in winter. People are used to taking "beginning of winter" as the beginning of winter, and the whole winter includes six solar terms: beginning of winter, light snow, heavy snow, winter solstice, slight cold and severe cold. In the northern half of the earth, the day from winter solstice is the longest night and the shortest day. Since the winter of the solstice, it has entered a "cold day".

Wind of the four seasons

Spring breeze can thaw, and warm weather promotes agriculture.

The skirt shakes slightly, and it will be sent when it is spent.

Xia Feng is full of vigor and vitality.

By the small pond, the lotus fragrance smells across the bank.

Autumn wind mingles with autumn rain, and the night is cool.

The noise of the ship is endless and the leaves are dancing.

The wind in winter is like a tiger, and the study is covered with windows.

All day, the birds hid.

Spring breeze-warm and gentle

Summer wind-full of energy.

Autumn wind-cool and bleak

The cold wind in winter-biting cold

Idioms describing winter scenery

Snow and ice, wind, snow, dance, snow and cold.

Thousands of miles away, it's freezing, freezing, and closing at night.

It's too cold in Donghan. It is freezing, and it snows every day.

To add insult to injury, Xia Yun is in great need of help in winter, and it snows all over the sky in October.

Five characteristics of winter and three characteristics of winter climate

The climate in winter is mainly cold and dry. In the north, in the cold winter, ice and snow, many animals in nature have returned to their nests and entered a "dormant" hibernation state. Even in the south, due to the cold weather, short days and long nights, people mostly reduce outdoor activities and go to bed early and get up early; Add more clothes and quilts at ordinary times to avoid being attacked by cold waves. Therefore, due to the cold climate in winter, diseases such as nephritis, pyelonephritis, enuresis, urinary incontinence and edema caused by cold are easy to recur or worsen. Winter is dominated by cold. If people can't add clothes and quilts in time, their resistance will decline, the functions of heart, stomach and lungs will be disordered, and even tracheitis, stomachache and coronary heart disease will recur, and diseases such as colds, joint pain, cough, rheumatoid arthritis and hypertension will also occur or worsen.

What are the common sense of winter climate?

1. Why is the temperature difference between north and south large in winter in China?

In the north, affected by the cold high pressure in Mongolia and Siberia in winter, cold air often goes south to form a cold wave, which greatly reduces the temperature. The south is affected by the warm and humid air flow from the ocean, and the winter is mostly mild. This is caused by the climate.

East-west mountains, such as Qinling Mountains, block the southward movement of cold air mass, which makes the temperature in the south high and the temperature in the north low, and the temperature difference naturally increases. This is due to the terrain.

Under the comprehensive effect of many geographical factors (solar radiation, climate and topography), the temperature difference between north and south in China is much larger in winter than in summer.

2. What is the cold wave and cold current?

When watching the news, you may often hear the saying that the cold wave is blue warning. Cold wave is a disastrous weather in winter. According to the regulations of the Meteorological Observatory, the average daily temperature drop caused by a cold air transit is as high as 10℃. When the lowest temperature is below 5℃, this cold air is called a cold wave.

People are used to calling the cold wave a cold wave, which is actually wrong. Cold wave is different from cold wave. Cold wave is a kind of ocean current, which refers to the huge seawater flow phenomenon from high latitude sea to low latitude sea.

Five world-famous cold currents: California cold current in the North Pacific, Peru cold current in the South Pacific, Canary cold current in the North Atlantic, Benguela cold current in the South Atlantic and Western Australia cold current in the South Indian Ocean. They flow from high latitudes in the northern hemisphere and low latitudes in the southern hemisphere respectively.

Isn't it cold because it is far from the sun?

The sun is a big stove. Sometimes the earth is close to the sun, and sometimes it is far away from the sun. Is the temperature high when it is near the sun and low when it is far from the sun?

The earth's orbit around the sun is elliptical, and the distance between the sun and the earth is constantly changing. Every year, 65438+10.3 is the latest day, and July 4 is the farthest day. It should be hot in June and cold in July, but the actual situation is just the opposite. In fact, the earth is too far from the sun. The average distance between them is 65.438+0.5 billion kilometers, while the farthest distance between the sun and the earth is only 5 million kilometers. This distance has little effect on the earth's gain of solar heat.

What really determines the heat and cold on the earth is the angle of the sun. Because the earth revolves around the sun obliquely, the angle at which the sun shines somewhere on the earth will change constantly. In summer, the sun shines directly in the northern hemisphere; In winter, the sun sets in the northern hemisphere. For the same amount of sunlight, direct sunlight is smaller than oblique sunlight. Then, in the same size place, when the sun is in direct sunlight, it is hot when it receives more sunlight; When the sun is slanting, it receives less sunlight, so the weather is naturally cold.

4. Why does it snow in winter?

In winter, snowflakes often fall from gray clouds and fall on the ground, showing a world wrapped in silver. So, why does it snow?

Snow is a form of precipitation, which is called solid precipitation in meteorology. Snowflakes grow in a cloud with both ice crystals and supercooled water droplets, which is called ice-water mixed cloud. In this cloud, supercooled water droplets are constantly evaporated into water vapor, and the water vapor is constantly rushing to the surface of ice crystals, where it condenses and settles, making the ice crystals gradually increase to form snowflakes. Snowflakes form and fall downward. In the process of falling, when you meet other snowflakes, they tend to stick together and grow up slowly. When encountering updraft, small snowflakes rise faster than large snowflakes. Small snowflakes catch up with big snowflakes and stick together. After repeated several times, they gradually turned into a snow ball with a diameter of several centimeters like cotton and goose feathers. When the updraft in the air can no longer hold these snowflakes, they will fall from the clouds. If the temperature of the lower air is below 0℃, snowflakes will fall to the ground, that is, people will see snow.

5. Why does it seldom thunder in winter?

Lightning is a positive and negative discharge phenomenon caused by the violent collision of convective clouds. Winter in China is mainly controlled by the northwest airflow, and the temperature is low, so there are few opportunities for the formation of convective clouds.

When the temperature is high in summer, the updraft on the ground and the cold airflow at high altitude form convective clouds, which are easy to produce electron clouds in violent collisions. When the discharge distance is reached, lightning is generated, so there are many lightning.

In winter, controlled by the continental cold air mass, the air is cold and dry, the solar radiation is weak, and the air is not easy to form violent convection, so thunderstorms rarely occur. But sometimes the weather is warmer in winter, and the power of warm and humid air is stronger. When the cold air in the north occasionally goes south, the warm and humid air is forced to rise, and the convection intensifies, so-called "thunder into winter" phenomenon will occur. Some experts say that the occurrence of thunderstorms does not depend on the temperature itself, but on the upper and lower distribution of temperature. In other words, although the temperature is not high in winter, if the temperature difference between the upper and lower reaches a certain value, strong convection can also be formed, resulting in thunderstorms. Thundering in winter is rare in China, but it often happens in Toronto in winter.

6. The shape of snowflakes

Some people think that snowflakes are all the same in shape, that is, hexagonal. In fact, there are no snowflakes with exactly the same shape in the world. Some hexagonal snowflakes are also called trees. When falling, they will condense water vapor or combine with other snowflakes to form large snowflakes. Moreover, when snowflakes fall, they will be deformed by temperature, humidity and wind.

7. Why do you love fog in winter?

When the water vapor contained in the air reaches the maximum, it reaches saturation. The higher the temperature, the more water vapor is contained in the air. 1 m3 air, the maximum water vapor capacity is 6.36g at 4℃; When the temperature is 20℃, the maximum water vapor content in 1 m3 air is17.30g. If there is more water vapor in the air than saturated water vapor at a certain temperature, the excess water vapor will condense out. When there is enough water, it will combine with tiny dust particles in the air, and at the same time, water molecules themselves will combine with each other and become small water droplets or ice crystals. The water vapor in the air exceeds saturation and condenses into water droplets, which is mainly caused by the temperature drop.