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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 125 · 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.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the same string (b) the lifting height (c) the same cup of coins (d) number of pulleys
  2. 2.True or false: a slide is an inclined plane. (a) True (b) False
  3. 3.True or false: a crowbar is an inclined plane. (a) False (b) True
  4. 4.True or false: a ramp is a wheel and axle. (a) False (b) True
  5. 5.⚖️ 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
  6. 6.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) turmeric powder (c) a magnet (d) a pencil
  7. 7.⚖️ 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 change it (c) we measure it
  8. 8.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a sloping road (c) a crowbar (d) a steering wheel
  9. 9.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) easier (c) impossible (d) the same
  10. 10.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) False (b) True
  11. 11.True or false: a ramp uses a pulley. (a) False (b) True
  12. 12.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) False (b) True
  13. 13.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) adds weight (c) makes it magnetic (d) changes pull direction
  14. 14.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
  15. 15.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) coins as the load (c) a battery cell (d) a pencil
  16. 16.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) in the tap (c) on the bench (d) on the flagpole
  17. 17.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the lifting height (b) number of pulleys (c) how hard we must pull (d) the same cup of coins
  18. 18.⚙️ Which of these is a lever? (a) a slide (b) a bottle opener (c) a flagpole (d) a tap handle
  19. 19.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a balloon (c) a small paper cup (d) turmeric powder
  20. 20.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it could fall on you (c) it might sing (d) it gets hot
  21. 21.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) down (b) up (c) in a circle (d) sideways
  22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we change it (b) we keep it the same (c) we measure it
  23. 23.True or false: a sloping road is an inclined plane. (a) False (b) True
  24. 24.⚙️ Which of these uses a pulley? (a) a crane (b) a slide (c) a ramp (d) a crowbar
  25. 25.True or false: a see-saw is a wheel and axle. (a) False (b) True
  26. 26.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
  27. 27.True or false: a flagpole is a lever. (a) True (b) False
  28. 28.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) coins as the load (c) a magnet (d) a mirror
  29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) False (b) True
  30. 30.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False
  31. 31.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we change it (b) we measure it (c) we keep it the same
  32. 32.True or false: a steering wheel is a lever. (a) False (b) True
  33. 33.⚙️ Which of these uses a pulley? (a) a crowbar (b) a slide (c) a spoon lifting a lid (d) a flagpole
  34. 34.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
  35. 35.⚙️ Which simple machine is a crane? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
  36. 36.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) the same (c) zero (d) double
  37. 37.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) string (d) a mirror
  38. 38.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
  39. 39.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
  40. 40.⚙️ Which of these is a wheel and axle? (a) a doorknob (b) a sloping road (c) a well pulley (d) a ramp

Answer key

  1. number of pulleys
  2. True
  3. False
  4. False
  5. True
  6. a pencil
  7. we measure it
  8. a steering wheel
  9. harder
  10. False
  11. False
  12. False
  13. changes pull direction
  14. a wheel and axle
  15. a battery cell
  16. on the flagpole
  17. how hard we must pull
  18. a bottle opener
  19. a small paper cup
  20. it could fall on you
  21. down
  22. we change it
  23. True
  24. a crane
  25. False
  26. not needed
  27. False
  28. coins as the load
  29. True
  30. False
  31. we keep it the same
  32. False
  33. a flagpole
  34. needed
  35. a pulley
  36. about half
  37. a mirror
  38. needed
  39. False
  40. a doorknob

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