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Category: Science
Word Count: 4812
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Rockets
Rockets are devices used to propel all types of vehicles, including cars, boats, and aircraft. In addition, without rockets there would be no spacecraft other forms of propulsion require outside oxygen to work and cannot be used in outer space, where there is no oxygen. In its simplest form, a rocket is a tube of fuel closed at one end and open at the other. As the fuel burns, it creates hot gases that expand and emerge rapidly from the open end. The action of the rushing gases causes t
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