Why is it windy, why is there a high wind

Because the air flows. Wind is a natural phenomenon caused by the movement of air, and it is caused by the heat of solar radiation. When sunlight hits the earth's surface, the surface temperature rises, and the air on the surface expands lightly and rises.

When the hot air rises, the cold air at a low temperature flows in laterally, and the rising air cools and becomes heavier and falls, and the air heats up to rise due to the high surface temperature, and the flow of this air generates wind.

Types of wind: 1. Foehn wind: When the air crosses the ridge, due to the sinking of the air, a warm (or hot) and dry wind is easy to occur on the leeward slope, which is called foehn wind.

2. Typhoon: It is an atmospheric vortex that occurs on the tropical ocean, so it is also called a tropical cyclone. When the maximum wind force in the center of the vortex reaches more than 8, it is called a typhoon; A weak typhoon with a maximum wind force of 6 to 7 at the center is called; When the maximum wind force reaches 8 to 12 at the center, it is called a strong typhoon.

3. Tornado: a kind of air vortex that extends from cumulonimbus clouds to the ground with a small range and great destructive power. A landspout that occurs on land is called a landspout, and a seaspout that occurs on the ocean is called a seaspout, also known as a waterspout.

A tornado is a violent storm with a strong rotational force, with wind speeds of up to more than 100 meters per second.

4. Trade winds: Persistent winds blowing from the subtropical high to a wide area of the equatorial region in the lower atmosphere. In the Northern Hemisphere, the trade winds prevail in the northeast; In the Southern Hemisphere, it is the Southeast.

Trade winds are characterized by being highly regular, blowing in one direction with almost constant force throughout the year.

Everywhere on the earth is absorbing the heat of the sun, but due to the unevenness of heating in each part of the ground, the air is not the same degree of cold and warm. The cold air cools and becomes heavier and then falls, so that the cold and warm air hold the silver gas and the wind is formed.

It turns out that on the surface of the earth, the heat received by the sun is not the same in various places, and some places receive it more, and the air becomes warmer. The temperature has risen. Warm air to expand.

On the contrary, there are places that receive less heat from the sun, the temperature decreases, the air becomes colder, and the cold air shrinks. Air, like water, always flows from hot air to low temperature. In this way, the movement of air forms the wind.

Wind is formed by the horizontal movement of air.

There are two ways in which air moves, one is horizontal and one is vertical. The former forms winds in the troposphere, which flow from one place to another, such as the monsoon, trade winds, frontal winds, etc., which we said, are all winds; The latter is also formed in the troposphere, but the difference is that the air flow is from the earth to the air, and there is no wind that we usually feel, and the branches of the trees will not move horizontally, but may be uprooted, like the dreaded typhoons, tornadoes and hurricanes.

The reason for the formation of wind is very simple, it is caused by the imbalance of cold and heat in the air, the cold air is dense and has a large mass, so it sinks, and the air pressure of the shed liquid is large; The density of hot air is small, so it will rise, and its air pressure will be small; According to the knowledge of physics, in a common environment, in order to make the air pressure to reach equilibrium, the flow pressure of the air pressure must be large, and the air pressure gradient force of the horizontal flow of air appears, perpendicular to the isobaric plane to the low pressure, and because of the circular earth mega and state autobiography, the earth in the northern and southern hemispheres has a tile deflection force, north right, south left, the wind is thus under the action of the pressure gradient force and the floor tile deflection force.