Rocket Propellants HW

What are rocket propellants made up of?

• Fuel and water

• Fuel and an oxidizer

• Oxygen and hydrogen

• Nitrogen and helium

What is the purpose of mixing and burning rocket propellants?

• To cool down the rocket engines

• To produce light

• To produce the thrust that propels a rocket into the air

• To create a protective shield around the rocket

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How do rocket engines work?

• By using only fuel to create a controlled explosion.

• By taking in fuel and oxidizer and igniting them to create a controlled explosion.

• By releasing fuel into the atmosphere to create propulsion.

• By using solar power to generate thrust.

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What is the result of the controlled explosion in a rocket engine?

• It generates electricity to power the rocket.

• It creates a vacuum that pulls the rocket upwards.

• It creates a stream of hot gases that shoot out of the back of the rocket, providing the thrust needed to lift off the ground.

• It cools down the engine to prevent overheating.

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What does Newton's third law state?

• For every action, there is an equal and opposite reaction.

• Objects in motion stay in motion unless acted upon by an external force.

• Every point mass attracts every other point mass by a force acting along the line intersecting both points.

• The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

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According to Newton's third law, what happens when a rocket expels gas out of its engines?

• The rocket moves in the direction of the expelled gas.

• The rocket remains stationary.

• The reaction pushes the rocket forward.

• The expelled gas pushes the rocket backward.

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When did the principles behind basic rocket science first exist?

• 1232

• 1302

• 1405

• 1501

What did the Chinese use in battle that relates to early rocket science?

• Fire arrows

• Gunpowder bombs

• Catapults

• Trebuchets

Who was the first person to publish work on rocketry in space?

• Yuri Gagarin

• Albert Einstein

• Konstantin Tsiolkovsky

• Isaac Newton

What profession did Konstantin Tsiolkovsky have?

• Astronaut

• School teacher

• Military engineer

• Physicist