True/False -- Indicate
whether the sentence or statement is true or false.
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| 1. | The
center of mass is the balance point of the rocket.
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| 2. | The
center of mass should NOT be down inside the pressure chamber area or the rocket will tumble at
takeoff.
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| 3. | A
counter weight is needed in the nose cone to move the center of mass down the rocket.
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| 4. | Too
much or too little water can be a problem.
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| 5. | A
rocket loaded with just air would fail to fly very far because it does not eject enough mass
(Newton’s 2nd law -- action) to propel the rocket in the opposite direction (Newton’s 2nd
law -- reaction).
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| 6. | Two
forces that affect the flight of the rocket are sliding friction and gravity.
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| 7. | To
explain what happens in terms of Newton’s 3rd law, the ACTION is air being pumped into the
rocket, and the REACTION is the water coming out.
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| 8. | A
nose cone would still be needed for a water-powered bottle rocket on the moon.
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| 9. | Rocket fins would still be needed for a water-powered bottle rocket on the
moon.
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| 10. | Since
there is no gravity and no atmosphere, a water-powered bottle rocket would NOT work in
space.
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Multiple Choice
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| 11. | We
launched the bottle rocket at a. | 50 psi | b. | 60 psi | c. | 70 psi | d. | 80 psi | | | | | | | | |
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| 12. | A
water-powered bottle rocket _______ fly straight without fins.
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| 13. | A
bottle rocket filled only with air would a. | fly just as far as one filled with 50%
water. | c. | be unstable in
flight | b. | not fly far at all. | d. | fly farther than one filled with
water. | | | | |
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| 14. | The
bottle rocket was filled with 50% water in order to a. | balance the
heavy nose cone. | c. | give it enough
mass to eject at launch. | b. | balance the rocket on the launch
pad. | d. | get everybody
wet. | | | | |
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| 15. | The
total distance flown at a 60o launch angle is dependent upon a. | size of the
fins. | c. | amount of
water. | b. | alignment of the parts. | d. | all of the above. | | | | |
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Matching
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| 16. | gravity
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| 17. | reaction
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| 18. | action
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| 19. | air
resistance
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| 20. | stabilizers
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| 21. | action
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| 22. | mass
to be ejected
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| 23. | counter balance
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| 24. | pressure chamber
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| 25. | reaction
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