Rocket Propulsion

What is a rocket?

• A device that moves by jets

• A device that moves via propellers

• A device that burns fuel causing extremely hot gasses to be ejected from the rocket out the nozzle (the tailend)

• A device that moves underwater with paddles

Which type of rocket is typically more efficient?

• A liquid filled rocket

• A solid filled rocket

• They are always equally efficient.

Which of these rockets use liquid fuel?

• Atlas

• Titan

• Delta

• All of the above

What is mass?

• How heavy something is

• Amount of matter in an object

• The speed something travels

• A change in velocity

What is Newton's third law?

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

• f=ma

• The law of inertia

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Which one of Newton's laws of motion explain rocket propulsion?

• Newton's first law

• Newton's second law

• Newton's third law

Why are we unable to use propellers in space?

• Propellers require air to work, and there is no air in space.

• We can. We just don't want to.

• They only work in water.

How do we define a rocket?

• A vehicle that requires air to move

• A vehicle that requires water to move

• A vehicle that moves on wheels

• A vehicle that moves by ejecting mass.

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The force supplied by the rocket engine must be sufficient to overcome...

• Launch

• Gravity

• Newton's 3rd Launch

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The nose of the rocket is shaped to

• Increase thrust

• Increase force

• Minimize air resistance