In the space, there are many objects such as earth, star and sun etc. It reminds us that there are a lot of unknown that we need to learn and understand so It would be better if we start to understand something around us first. We can find and develop or invent many things like aircraft, electricity, nuclear power, engine and weather. It is not easy that human try to understand and forecast the weather but we can do it almost perfect nowadays with equipment, knowledge and technology. Wind is the air that moves around all of us. To understand Wind, we have to understand pressure, temperature moisture content and speed & direction of wind. When the wind become storm and can damage everything or it can bring high moisture so it become rain finally. Basic rule of the air or wind which we should know like:
1. The wind will move from low pressure to high pressure.
2. The higher of level, the lower air pressure.
3. The higher air temperature, the lower air density.
4. The more air pressure different, The more speed of the wind
There are still a lot of basic rule of air that can make us can forecast the wind and weather. That make all of us can plan and live on the earth easily and comfortable.