Question

Connect with sports Air is not a pure substance. It helps us in many ways from breathing to playing. Balloon sports are a very popular sport. Hot air is lighter than cool air. So, the balloons filled with hot air rise up. Find out more about hot air balloons.

Answer 1

The hot air balloon consists of three parts: an envelope- which contains heated air, basket, and burner system which creates an open flame by burning a mix of liquid propane and air.

The basic principle behind hot air balloons is the use of hot air to create buoyancy, which generates lift.

Hot air weighs less than the same volume of cold air because it is less dense. It means that hot air will rise up and float when there is cold air around it.

Nowadays, most hot air balloons are made of nylon. The melting point of this material is approximately 230° C. The temperature inside a hot air balloon is usually kept below 120° C.

Hot air balloon festivals are held annually in many places throughout the year, allowing hot air balloon operators to gather- as well as for the general public to participate in various activities.

Hot air balloon flights are not possible in the rain. This is because the heat inside of the balloon can bring rain to boiling temperatures on top of the balloon, thereby destroying hot air balloon fabric.