Description
| Text Type: | Non Fiction, Report |
| Level: | 22 |
| Key Concepts: |
The first machine to fly and carry people was a hot-air balloon. Hot air rises and can lift things. Some inventions are tested on animals first to check that they are safe for humans. |
| Paired Book: | The balloon Adventure |
| Author: | Mary-Anne Creasy |
| ISBN: | 9781742341347 |