Hot air balloon

High school (ages 12+)
Transportation

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Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/hot-air-balloon

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the type of aircraft?Lighter-than-air aircraft
2. What is the origin of manned flight?France
3. What makes a hot air balloon float?A hot air balloon floats because the air inside its big envelope is heated by a burner. Warm air is lighter than the cold air outside, so the balloon rises. The lift comes from the buoyant force that pushes the balloon up.
4. Who invented the first hot air balloon and when?The Montgolfier brothers invented the first hot air balloon in 1783. Their first manned flight happened on November 21, 1783, with two pilots in the balloon.

Archimedes' Principle: States that the upward buoyant force that is exerted on a body immersed in a fluid equals the weight of the fluid displaced by the body.
Thermodynamics: The branch of physics concerned with heat and its relation to other forms of energy and work.
Fluid Dynamics: The study of fluids (liquids, gases, and plasmas) in motion.
Buoyant Force: An upward force exerted by a fluid that opposes the weight of an object immersed in it.