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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 247 · 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? True or false: number of pulleys is the one thing we change. (a) False (b) True
  2. 2.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the bench (c) on the blackboard (d) in the tap
  3. 3.🧺 Which of these is not needed for the thread-reel pulley? (a) yeast (b) an empty thread reel (c) a small paper cup (d) coins as the load
  4. 4.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) False (b) True
  5. 5.⚙️ Which of these is a wheel and axle? (a) a ramp (b) a doorknob (c) a flagpole (d) a spoon lifting a lid
  6. 6.⚙️ Which of these is a wheel and axle? (a) a slide (b) a sloping road (c) a spoon lifting a lid (d) a tap handle
  7. 7.True or false: string is needed for the thread-reel pulley. (a) False (b) True
  8. 8.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) impossible (c) easier (d) harder
  9. 9.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a magnet (c) string (d) turmeric powder
  10. 10.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
  11. 11.⚙️ Which of these is a wheel and axle? (a) a steering wheel (b) a flagpole (c) a crowbar (d) a sloping road
  12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) yeast (c) a pencil (d) coins as the load
  13. 13.🧺 Which of these is not needed for the thread-reel pulley? (a) turmeric powder (b) an empty thread reel (c) a small paper cup (d) string
  14. 14.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
  15. 15.⚖️ 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 change it (b) we measure it (c) we keep it the same
  16. 16.True or false: a crane is a wheel and axle. (a) False (b) True
  17. 17.True or false: a bottle opener uses a pulley. (a) False (b) True
  18. 18.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it can hurt your finger (c) it gets longer (d) it gets wet
  19. 19.⚙️ Which of these uses a pulley? (a) a doorknob (b) a bottle opener (c) a tap handle (d) a crane
  20. 20.⚙️ Which simple machine is a well pulley? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
  21. 21.⚙️ Which simple machine is a ramp? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
  22. 22.⚖️ 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
  23. 23.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
  24. 24.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
  25. 25.⚖️ 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
  26. 26.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
  27. 27.True or false: a doorknob is a wheel and axle. (a) False (b) True
  28. 28.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) yeast (c) coins as the load (d) a mirror
  29. 29.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 5 cm (c) 40 cm (d) 20 cm
  30. 30.True or false: a crane uses a pulley. (a) False (b) True
  31. 31.⚖️ 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 same cup of coins (c) how hard we must pull (d) number of pulleys
  32. 32.⚙️ Which simple machine is a see-saw? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
  33. 33.⚙️ Which of these uses a pulley? (a) a ramp (b) a steering wheel (c) a flagpole (d) a crowbar
  34. 34.True or false: a bottle opener is a lever. (a) False (b) True
  35. 35.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
  36. 36.True or false: turmeric powder is not needed for the thread-reel pulley. (a) False (b) True
  37. 37.True or false: a ramp is an inclined plane. (a) False (b) True
  38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) an empty thread reel (c) a small paper cup (d) string
  39. 39.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) yeast (c) a pencil (d) a balloon
  40. 40.⚖️ 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 change it (c) we keep it the same

Answer key

  1. True
  2. on the flagpole
  3. yeast
  4. False
  5. a doorknob
  6. a tap handle
  7. True
  8. harder
  9. string
  10. not needed
  11. a steering wheel
  12. yeast
  13. turmeric powder
  14. needed
  15. we measure it
  16. False
  17. False
  18. it can hurt your finger
  19. a crane
  20. a pulley
  21. an inclined plane
  22. we keep it the same
  23. not needed
  24. not needed
  25. we keep it the same
  26. a wheel and axle
  27. True
  28. coins as the load
  29. 20 cm
  30. True
  31. number of pulleys
  32. a lever
  33. a flagpole
  34. True
  35. not needed
  36. True
  37. True
  38. turmeric powder
  39. a pencil
  40. we keep it the same

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