Rocket Propulsion Concepts and Principles

What law does rocket propulsion follow?

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

• Newton's Law of Gravitation

What is the main chemical reaction that powers rockets?

• Photosynthesis

• Combustion

• Fermentation

• Electrolysis

What is the role of an oxidizer in rocket propulsion?

• To cool the engine

• To provide thrust

• To make the fuel burn

• To reduce friction

What is one of the fuels used in the RS-25 main engines of the SLS?

• Liquid nitrogen

• Liquid hydrogen

• Liquid helium

• Liquid methane

What percentage of thrust do the twin solid rocket boosters provide at liftoff?

• 50%

• 60%

• 75%

• 85%

What is the main purpose of combustion in rocket engines?

• To create sound

• To release energy

• To produce light

• To generate heat

What is the byproduct of the hydrogen-oxygen reaction in the SLS engines?

• Carbon dioxide

• Steam (Water Vapor)

• Methane

• Nitrogen gas

At what temperature is hydrogen cooled to become a liquid?

• -297 degrees Fahrenheit

• -183 degrees Celsius

• -423 degrees Fahrenheit

• -100 degrees Celsius

What is the main purpose of the fast-moving steam in the rocket engines?

• To cool the engines

• To create thrust

• To reduce weight

• To increase fuel efficiency

What is the main challenge of using hydrogen as a fuel in rockets?

• It is too expensive.

• It requires a large tank due to its low density.

• It is difficult to ignite.

• It is not environmentally friendly.