Air is used in various ways:

- Burning: Air is essential for combustion or burning. When a substance is burned, it reacts with oxygen in the air to produce heat and light. This process is called oxidation. Without air, it would be impossible to burn materials such as wood, coal, or gasoline, which are commonly used for cooking, heating, and transportation.

- Flying: Air plays a crucial role in the process of flying. Airplanes and helicopters use air to generate lift, allowing them to overcome gravity and stay in the air. The wings of an airplane are specially designed to create a pressure difference between the upper and lower surfaces. This pressure difference, along with the forward motion of the aircraft, generates lift and enables flight.

- Sailing: Air is also utilized in sailing, particularly in the context of sailing boats and yachts. Sailboats use the force of the wind blowing against their sails to propel them forward. By adjusting the orientation and shape of the sails, sailors can harness the power of the wind and control the direction and speed of the boat.

In conclusion, air is used in burning, flying, and sailing. It is essential for combustion, enables flight by generating lift, and powers sailboats through the force of the wind.

Flying