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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 511 · 40 questions
TalentJR

What you do (Pull down, lift up): 1. Push the pencil through the thread reel; an adult holds the pencil ends level. 2. Tie the paper cup to one end of the string and lay the string over the reel. 3. Put coins in the cup and pull the other end down. 4. Feel how hard you pull; never stand under the load or wrap string round your fingers.

NameDateTime takenScore ___ / 40
  1. 1.True or false: a mirror is not needed for the thread-reel pulley. (a) True (b) False
  2. 2.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
  3. 3.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
  4. 4.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
  5. 5.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
  6. 6.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
  7. 7.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) turmeric powder (c) a balloon (d) string
  8. 8.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) string (c) a pencil (d) a balloon
  9. 9.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) turmeric powder (c) yeast (d) a small paper cup
  10. 10.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
  11. 11.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a pencil (c) a battery cell (d) an empty thread reel
  12. 12.⚙️ Which simple machine is a crowbar? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
  13. 13.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
  14. 14.True or false: a well pulley uses a pulley. (a) True (b) False
  15. 15.True or false: string is needed for the thread-reel pulley. (a) False (b) True
  16. 16.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is kept the same. (a) False (b) True
  17. 17.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
  18. 18.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
  19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) an empty thread reel (d) turmeric powder
  20. 20.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 20 cm (c) 40 cm (d) 10 cm
  21. 21.⚙️ Which simple machine is a tap handle? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
  22. 22.True or false: a ramp is an inclined plane. (a) True (b) False
  23. 23.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
  24. 24.⚙️ Which simple machine is a slide? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
  25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same cup of coins”? (a) we measure it (b) we keep it the same (c) we change it
  26. 26.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) in the tap (c) on the blackboard (d) on the flagpole
  27. 27.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a doorknob (c) a ramp (d) a crane
  28. 28.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) a magnet (d) coins as the load
  29. 29.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) water gets lighter (c) the bucket floats (d) pulling down is easier
  30. 30.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
  31. 31.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) double (c) the same (d) about half
  32. 32.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
  33. 33.True or false: a slide is an inclined plane. (a) True (b) False
  34. 34.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
  35. 35.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) the same (c) easier (d) harder
  36. 36.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) False (b) True
  37. 37.⚙️ Which of these is a lever? (a) a steering wheel (b) a see-saw (c) a well pulley (d) a ramp
  38. 38.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
  39. 39.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “how hard we must pull”? (a) we keep it the same (b) we measure it (c) we change it
  40. 40.⚙️ Which simple machine is a crane? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane

Answer key

  1. True
  2. not needed
  3. True
  4. True
  5. needed
  6. False
  7. string
  8. a balloon
  9. a small paper cup
  10. needed
  11. a battery cell
  12. a lever
  13. False
  14. True
  15. True
  16. False
  17. False
  18. True
  19. turmeric powder
  20. 20 cm
  21. a wheel and axle
  22. True
  23. needed
  24. an inclined plane
  25. we keep it the same
  26. on the flagpole
  27. a ramp
  28. a magnet
  29. pulling down is easier
  30. True
  31. about half
  32. not needed
  33. True
  34. needed
  35. harder
  36. True
  37. a see-saw
  38. not needed
  39. we measure it
  40. a pulley

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