1. What is hot air balloon?

`=>`A hot air balloon is a type of aircraft.

2. How can hot air balloon fly?

`=>`By heating the air inside the balloon with fire, it is lifted up.

3. In what case does a hot air balloon carry more weight?

`=>`The balloon can carry more weight on a cold day or if the air inside the balloon is very hot.

4. What did Chinese people use hot air for?

`=>`In China, they used hot air to make objects fly and the first use of the knowledge was used to send lanterns into the air for signaling

5. How meaningful of the hot air balloon to carrying people?

`=>`The hot air balloon is the oldest form of flying technology that successfully carried people

6. Who made the first hot air balloon to carry a person?

`=>`The first hot air balloon to carry a person was made by the French Montgolfier brothers.

7. On what days was the hot air balloon demonstrated at the presence of King Louis XVI and Queen Marie Antoinette?

`=>`On September 19, 1783, they demonstrated their invention for King Louis XVI and Queen Marie Antoinette at the French court in Paris

8. How long did the balloon fly for?

`=>` The balloon flew for a period of 20 minutes.

1. It is a type of aircraft.

2. By heating the air inside the balloon with fire

3. The balloon can carry more weight on a cold day or if the air inside the balloon is very hot.

4. They used hot air to make objects fly

5. It is the oldest form of flying technology that successfully carried people

6. The French Montgolfier brothers

7. On September 19, 1783

8.  The balloon flew for a period of 20 minutes.