What is the function of the wind?

1, adjust the temperature.

2. Sandstorm.

3. generate electricity.

4. Plant pollination.

5 g gliding.

6. Fly a kite.

What are the characteristics and functions of wind?

Characteristics of wind: wind is a natural phenomenon on the earth, which is caused by solar radiation heat. The sun shines on the earth's surface, and different parts of the earth's surface are heated, resulting in temperature difference, causing atmospheric convection and forming wind.

The role of the wind:

use

1. Wind energy promotes the exchange of dry and cold air and warm and humid air. Wind is a kind of natural energy, and people also use windmills to generate electricity. Sailing is also driven by wind.

2. Wind has done a lot of work in nature. Wind energy can mix and balance a wide range of heat and water vapor, and adjust the temperature and humidity of the air; Clouds and rain can be sent far away, so that the water cycle on the earth can be completed.

3. The gentle breeze helps plants to spread pollen, so that some cross-pollinated plants can get the necessary pollen, so that plants can "get married", form seeds, bear fruits and leave the next generation for plants. The wind can also blow the seeds of some plants far away, so that they can grow and develop in a new environment and continue to prosper their "new families".

harm

The wind often brings disasters to mankind. Storms, typhoons and hurricanes will flood farmland, collapse houses and cut off water and electricity supply. Tornadoes will make cars, people, houses and so on disappear without a trace.

What are the functions of the wind?

1, wind energy dries the water on clothes, which makes people cool, makes the flame stronger, promotes sailing and spreads pollen.

2. People use windmills to push the mill, pull bellows to blow fire, and electric fans to cool it; Sailing in sail before the wind, gliders fly into the sky with the help of wind.

3. Wind power generation is pollution-free, inexhaustible and an ideal power.

4. Adjust the temperature difference of the atmosphere to change the temperature.

What is the function of the wind?

Wind energy promotes the exchange of dry and cold air and warm and humid air. Wind is a kind of natural energy. A long time ago, humans learned to make windmills, and now people still use windmills to pump water and process food.

Sailing boats are also driven by the wind. Wind plays many roles in daily life, but it also often brings disasters to human beings. Storms, typhoons and hurricanes will flood farmland, collapse houses and cut off water and electricity supply. Tornadoes will make cars, people, houses and so on disappear without a trace.

Wind has done a lot of work in nature. Wind energy can mix and balance a wide range of heat and water vapor, and adjust the temperature and humidity of the air; Clouds and rain can be sent far away, so that the water cycle on the earth can be completed.

The northeast trade wind in the Atlantic Ocean near the equator caused strong seawater flow. The wind blows a lot of seawater to the coast of North America. After the seawater flows to the Gulf of Mexico, it begins to flow in an arc along the coast of North America, then passes through the narrow strait between Florida and Cuba, and then flows to the vast ocean surface. After merging with the current of Antilles, it forms the most powerful seawater current in the world-"Gulfstream". Warm currents bring warmth from the south of Europe to the northwest. The east coast of Canada at the same latitude is as cold as-20℃ in winter; But the temperature here is above 0℃, and the coastal waters are not frozen all year round. Cold-tolerant tundra grows in Canada, while dense coniferous forests grow in northwest Europe. It is estimated that this warm current brings heat to every meter-long coast here every year, which is equivalent to the heat generated by burning 60 thousand tons of coal. What a huge natural "heating device"!

The mild climate in northwest Europe is mainly caused by the Gulf Stream. The warm climate in western Europe also depends to a great extent on the southwest wind blowing from the ocean from time to time, bringing warm and humid air. In the North Pacific Ocean, the northeast trade wind blows the seawater to the west (North Equatorial Current), and it turns to the north and south due to the blocking of the land on the west coast. The North Branch enters the East China Sea from the east of Taiwan Province Province, then flows to the northeast, and then flows out of the East China Sea from the south of Kyushu. This current is warmer than the surrounding seawater, and its color is blue-black, which is called Kuroshio Warm Current. A small branch of the Kuroshio warm current flows northwest along the Yellow Sea and points to the Bohai Strait. We call it the Yellow Sea Warm Current. It can cross the Bohai Strait and reach the coast of Qinhuangdao, sending out a lot of heat, which is an important reason why the sea water does not freeze here in winter. The other branch of the Kuroshio warm current reaches the offshore of Japan, which is enough to warm the sea there. In winter, the water temperature is about 10℃ higher than that on the east coast of the Pacific Ocean at the same latitude.

The Indian Ocean monsoon dominates all agricultural production in the Indian Peninsula. In winter (from mid-February to the end of May, 65438+), there is a dry northeast wind-winter monsoon, and the weather is dry and sunny. From June, the summer monsoon began, and the wind blew from the ocean, which was a humid southwest wind. It rained heavily all over India, and the agricultural harvest of the whole country was related to this rain. If the "monsoon rain" of a year starts later or ends earlier than normal, famine and hunger will be inevitable.

Most parts of our country are affected by monsoon. In summer, the warm and humid air flow from the ocean brings abundant rainfall, coupled with high temperature and sufficient sunshine, so that crops, animals and plants can grow well. The summer monsoon also goes deep into the mainland. In this way, it will not become a vast desert, and most areas are still good places for agricultural production. However, due to the different intensity of summer monsoon every year, there are always floods and droughts in some places.

The local wind also has a considerable influence on the climate. Therefore, in the mountainous areas of many countries, the frequent "wind burning" will suddenly raise the air temperature and melt a lot of snow in a short time.

Wind spreads water vapor to all parts of the earth. Strong airflow carries water vapor to dry areas. The huge work done by the wind to transport water vapor on the ground shows that the rainfall falling on the ground every second will not be less than150,000 tons!

Plants can't live without the help of wind.

The gentle breeze helps plants to spread pollen, so that some cross-pollinated plants can get the necessary pollen, so that plants can "get married", form seeds, bear fruits and leave the next generation for plants. Sorghum, such as pine, poplar and purple, is produced by the wind as a "matchmaker".

The wind can also blow the seeds of some plants far away, so that they can grow and develop in a new environment and continue to prosper their "new families". The wind began to help plants reproduce ... >>

What's the use of wind?

Wind 1, natural explanation wind usually refers to the horizontal motion component of air, including direction and magnitude, that is, wind direction and wind speed. But for flight, it also includes vertical motion components, so-called vertical or ascending and descending airflow. Gust (also known as gust) is the wind whose wind speed changes dramatically in a short time. Meteorological wind direction refers to the direction of the wind, and navigational wind direction refers to the direction of the wind. In meteorological service, the grade of wind is often used to indicate the size of wind speed. The "Beaufort Wind Scale" drawn up by Englishman F Beaufort in 1805 divides the wind power into 13 (0 ~ 12). From 1946, the wind level increased to 18 (0 ~ 17). Wind and gust have a great influence on aircraft flight. When taking off and landing, you must choose the appropriate direction according to the wind direction and wind speed on the ground; In flight, the drift must be corrected in time according to the wind direction and speed, so as to maintain a certain course and calculate the standard flight time. When building an airport, the runway direction must be determined according to the climatic data of the wind. In addition, the wind also has a great influence on the flight performance of aircraft. For example, when the plane flies against the wind, the lift of the plane will increase. Gust has a great influence on the flight load of aircraft, so it is necessary to give a model and strength standard to describe gust in aircraft design. The definition of wind is the movement of air relative to the ground, usually referring to its horizontal component, which is expressed as wind direction, wind speed or wind force. Wind direction refers to the direction of airflow, which is often recorded in the direction of 16. Wind speed is the horizontal distance that air moves in unit time, in meters per second. The horizontal wind speed in the atmosphere is generally 1.0 ~ 10 m/s, typhoons and tornadoes can sometimes reach 102 m/s, and the wind speed in farmland can be less than 0. 1 m/s. There are two kinds of observation data of wind speed: instantaneous value and average value, and the average value is generally adopted. Wind is measured by electric anemometer, portable anemometer, Dyne anemometer and hot ball anemometer, which is used to measure the breeze in farmland. It can also be estimated according to the wind level and the signs of ground objects. The direct cause of wind formation is the uneven distribution of air pressure in the horizontal direction. Wind is comprehensively influenced by different factors such as atmospheric circulation, topography and water area, and its manifestations are various, such as monsoon, local sea-land wind, valley wind and foehn wind. Simply put, wind is the movement of air molecules. To understand the causes of wind, we must first understand two key concepts: air and air pressure. The components of air include nitrogen molecules (accounting for 78% of the total air volume), oxygen molecules (accounting for about 2 1%), water vapor and other trace components. All air molecules are moving at a very fast speed, colliding with each other and anything on the horizon. Air pressure can be defined as the pressure exerted by air molecules in a given area. Generally speaking, the more air molecules exist in an area, the greater the air pressure in this area. Accordingly, wind is the result of pressure gradient force. However, some changes in atmospheric pressure are caused by storms, some by uneven surface heating, and some by atmospheric molecules being forced to flow from a relatively high pressure area to a low pressure area in a certain horizontal area. Most of the high-pressure and low-pressure belts shown on the weather map only form a mild breeze that accompanies us. However, the pressure difference required to generate the breeze only accounts for 1% of the atmospheric pressure itself, and this pressure change will occur in many areas. Relatively speaking, the formation of strong storms stems from the change of larger and more concentrated pressure areas. Influence of wind Wind is one of the environmental factors of agricultural production. Moderate wind speed plays an important role in improving farmland environmental conditions. The increase of wind speed accelerates or strengthens the surface heat exchange, evapotranspiration of farmland and the transportation of carbon dioxide and oxygen in the air. Wind can spread plant pollen and seeds and help plants pollinate and reproduce. Wind energy is widely distributed and inexhaustible. Monsoon prevails in China, which is beneficial to the growth of crops. The Inner Mongolia Plateau, the Northeast Plateau, the southeast coast and the inland mountainous areas are rich in wind energy resources, which can be used as energy development and utilization. Wind will also have a negative impact on agriculture. It can spread pathogens and plant diseases. High-altitude wind is a meteorological condition for the long-distance migration of pests such as armyworm, rice planthopper, rice leaf roller and locust. Strong wind causes mechanical wear of leaves, lodging of crops, broken trees, falling flowers and fruits, which affects the yield. Strong winds can also lead to soil erosion and sand dune movement, and destroy farmland. Blindly reclaiming wasteland in arid areas, wind will lead to land desertification. Grazing >>

What are the three benefits of the wind to people?

Welfare 1. Wind can spread plant pollen and seeds and help plants pollinate and reproduce. For example, the most common example is that dandelion seeds are spread by the wind. 2. Wind energy is a widely distributed and inexhaustible energy source. Using wind energy to generate electricity, we reduce the use of fossil energy and protect the environment. 3. In agricultural squadron, wind plays an important role in improving farmland environment. We know that air flows to form wind, which transports and exchanges carbon dioxide, oxygen and heat in the air. It creates conditions for the growth of crops. Disadvantages 1. The influence of strong wind on land. Strong winds may cause soil erosion, land desertification and so on. For example, the formation of the Loess Plateau. Advantages and disadvantages of wind 2. Disadvantages of wind to agriculture. In fact, the wind has a double effect on agriculture. Can spread pathogens, spread plant diseases, crops lodging, trees breaking, falling flowers and fruits, etc. And do harm to people's production and life.

What effect does the wind have on plants?

Of course there is a difference. Otherwise, farmers have prayed for a "good weather" since ancient times. First of all, the wind can update the small environment for planting, and the air circulation and hot and humid environment are the most likely to lead to the occurrence of pests and diseases, which is naturally what we don't want to see.

As far as plant growth is concerned, wind is also essential. We know that fertilizers applied to soil can only be converted into effective accumulation through plant absorption. This absorption depends on plant transpiration as a means of transportation, and the wind plays the role of a road here-taking away heat and accelerating absorption.

There are other functions, such as promoting pollination and so on.

Of course, it will also bring harm. Everything has a reasonable range, beyond which it is called disaster.