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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 610 · 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.

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  1. 1.⚙️ Which of these is a lever? (a) a bottle opener (b) a flagpole (c) a slide (d) a tap handle
  2. 2.True or false: a see-saw is a wheel and axle. (a) False (b) True
  3. 3.⚙️ Which simple machine is a well pulley? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
  4. 4.⚖️ 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
  5. 5.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) sideways (c) down (d) up
  6. 6.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
  7. 7.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) a small paper cup (d) a battery cell
  8. 8.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
  9. 9.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a sloping road (c) a see-saw (d) a doorknob
  10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) an empty thread reel (d) a magnet
  11. 11.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it might sing (c) it gets hot (d) it could fall on you
  12. 12.True or false: a slide is a wheel and axle. (a) False (b) True
  13. 13.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) in the tap (c) on the flagpole (d) on the blackboard
  14. 14.🧺 Which of these is needed for the thread-reel pulley? (a) an empty thread reel (b) a balloon (c) a magnet (d) a battery cell
  15. 15.⚙️ Which of these is a lever? (a) a doorknob (b) a steering wheel (c) a flagpole (d) a spoon lifting a lid
  16. 16.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a magnet (c) coins as the load (d) turmeric powder
  17. 17.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it turns blue (c) it can hurt your finger (d) it gets wet
  18. 18.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) zero (c) double (d) the same
  19. 19.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 40 cm (c) 5 cm (d) 10 cm
  20. 20.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
  21. 21.True or false: a well pulley is a lever. (a) False (b) True
  22. 22.⚙️ Which of these is a lever? (a) a sloping road (b) a doorknob (c) a see-saw (d) a flagpole
  23. 23.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False
  24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a magnet (c) a pencil (d) yeast
  25. 25.⚙️ Which of these is a wheel and axle? (a) a doorknob (b) a see-saw (c) a spoon lifting a lid (d) a crowbar
  26. 26.⚙️ Which simple machine is a see-saw? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
  27. 27.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
  28. 28.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
  29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we keep it the same (b) we measure it (c) we change it
  30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) yeast (b) a small paper cup (c) coins as the load (d) string
  31. 31.⚖️ 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
  32. 32.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
  33. 33.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) the rope gets shorter (c) pulling down is easier (d) the bucket floats
  34. 34.⚙️ Which simple machine is a spoon lifting a lid? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
  35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we measure it (b) we change it (c) we keep it the same
  36. 36.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a ramp (c) a crane (d) a spoon lifting a lid
  37. 37.True or false: a ramp is a wheel and axle. (a) True (b) False
  38. 38.True or false: a doorknob uses a pulley. (a) True (b) False
  39. 39.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
  40. 40.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False

Answer key

  1. a bottle opener
  2. False
  3. a pulley
  4. we measure it
  5. down
  6. True
  7. a battery cell
  8. needed
  9. a sloping road
  10. a magnet
  11. it could fall on you
  12. False
  13. on the flagpole
  14. an empty thread reel
  15. a spoon lifting a lid
  16. coins as the load
  17. it can hurt your finger
  18. about half
  19. 20 cm
  20. False
  21. False
  22. a see-saw
  23. False
  24. a pencil
  25. a doorknob
  26. a lever
  27. not needed
  28. a lever
  29. we keep it the same
  30. yeast
  31. True
  32. needed
  33. pulling down is easier
  34. a lever
  35. we keep it the same
  36. a crane
  37. False
  38. False
  39. not needed
  40. True

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