What is wind? And where does the wind come from?

Everything we see around us is actually different forms of molecules. When molecules of matter are close together, solid state is formed. If it is a little far away, it is liquid, and if it is far away, the substance is in gaseous state. Air is essentially a gaseous state composed of various atoms. The flow of this gaseous state is called air flow.

The state of matter depends on two main factors – heat and pressure. At the same heat and pressure, not all substances have the same physical state (solid, liquid and gas).

Whatever the state of matter is, it is affected by gravity. All matter on Earth falls from top to bottom. That is, towards gravity. Which direction of gravity? Generally speaking, the downside. But if you think a little deeper, you will understand that the force of gravity works from low gravity to high gravity. We see this flow towards gravity very well in liquids. Gravity is the main reason for the formation of riverbeds. Gravity is the reason why the ocean is filled with water. Just as liquids flow from high to low pressure, gases flow from high pressure to low pressure. It is necessary to say here that pressure plays a role in the flow of liquids, and gravity plays a role in the flow of gaseous substances. However, it is quite low.

Pressure has a close relationship with the temperature of a gas or gaseous substance. The relationship is proportional. When the temperature increases, the pressure increases, and when the temperature decreases, the pressure decreases. It is from the source of gas. But we will not go to the source. If you understand this for now, you won’t have any problem understanding the rest.

Heat on earth comes mainly from the sun. That is, the atmosphere is heated by the heat of the sun. As we know, the earth is always rotating around its axis and around the sun. Because of this, the sunlight does not fall equally in all parts of the world. As a result, the Earth’s atmosphere is not heated equally everywhere. So air pressure is not equal everywhere. Airflow is created to equalize this uneven distribution of pressure. Since uneven temperatures always exist across the globe, the airflow never stops. If the temperature changes more or less, the wind power also decreases.

When the temperature of an area suddenly rises, the air there becomes quite light. When light air rises rapidly, a vacuum forms in that region. Relatively cold air rushes in from all around to fill this vacuum. A severe vortex is created. This whirlwind is called a tornado.
You understand, the air we feel on earth is basically a kind of flow of molecules in the gaseous state. This gaseous state has always existed on Earth. We are always drowning in the air. But feel only when this air flow. That is, air from one place goes to another place. New particles are added or lost to the atmosphere due to the water cycle, plant respiration, animal respiration, and dust particles. But flow requires heat energy. This current is created on earth due to the sun. That is, the wind blows. Broadly speaking we can therefore claim that wind power is a form of solar energy.