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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 521 · 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.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) impossible (c) easier (d) harder
  2. 2.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) True (b) False
  3. 3.⚖️ 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 change it (b) we measure it (c) we keep it the same
  4. 4.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a mirror (c) a battery cell (d) coins as the load
  5. 5.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
  6. 6.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it could fall on you (c) it is magnetic (d) it might sing
  7. 7.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) yeast (c) a mirror (d) string
  8. 8.⚙️ Which simple machine is a slide? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
  9. 9.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
  10. 10.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) an empty thread reel (c) a small paper cup (d) a battery cell
  11. 11.⚙️ Which of these uses a pulley? (a) a crane (b) a tap handle (c) a bottle opener (d) a ramp
  12. 12.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) zero (c) about half (d) double
  13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) coins as the load (c) an empty thread reel (d) a pencil
  14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is the one thing we change. (a) True (b) False
  15. 15.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
  16. 16.⚙️ Which of these is a lever? (a) a well pulley (b) a tap handle (c) a bottle opener (d) a flagpole
  17. 17.⚙️ Which simple machine is a bottle opener? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
  18. 18.True or false: a crane is a lever. (a) True (b) False
  19. 19.⚖️ 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 keep it the same (c) we change it
  20. 20.True or false: a well pulley is an inclined plane. (a) True (b) False
  21. 21.True or false: a bottle opener is a lever. (a) True (b) False
  22. 22.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) rope (c) nail (d) battery
  23. 23.True or false: a tap handle is a lever. (a) False (b) True
  24. 24.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
  25. 25.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
  26. 26.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
  27. 27.True or false: a well pulley is a wheel and axle. (a) False (b) True
  28. 28.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) a pencil (d) turmeric powder
  29. 29.⚙️ Which of these uses a pulley? (a) a crowbar (b) a doorknob (c) a bottle opener (d) a well pulley
  30. 30.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
  31. 31.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a ramp (c) a steering wheel (d) a crowbar
  32. 32.True or false: string is needed for the thread-reel pulley. (a) True (b) False
  33. 33.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a slide (c) a crowbar (d) a bottle opener
  34. 34.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
  35. 35.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 40 cm (c) 5 cm (d) 20 cm
  36. 36.True or false: a sloping road uses a pulley. (a) True (b) False
  37. 37.🧺 Which of these is not needed for the thread-reel pulley? (a) a mirror (b) string (c) coins as the load (d) a pencil
  38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) a balloon (d) a small paper cup
  39. 39.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
  40. 40.⚙️ Which of these is a lever? (a) a spoon lifting a lid (b) a doorknob (c) a well pulley (d) a tap handle

Answer key

  1. harder
  2. False
  3. we keep it the same
  4. coins as the load
  5. a lever
  6. it could fall on you
  7. string
  8. an inclined plane
  9. True
  10. a battery cell
  11. a crane
  12. about half
  13. a magnet
  14. True
  15. True
  16. a bottle opener
  17. a lever
  18. False
  19. we keep it the same
  20. False
  21. True
  22. rope
  23. False
  24. needed
  25. not needed
  26. a wheel and axle
  27. False
  28. turmeric powder
  29. a well pulley
  30. needed
  31. a ramp
  32. True
  33. a slide
  34. a wheel and axle
  35. 20 cm
  36. False
  37. a mirror
  38. a balloon
  39. needed
  40. a spoon lifting a lid

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