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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 169 · 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.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
  2. 2.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) True (b) False
  3. 3.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a small paper cup (c) a magnet (d) a battery cell
  4. 4.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
  5. 5.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
  6. 6.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
  7. 7.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) coins as the load (c) a balloon (d) a magnet
  8. 8.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it can hurt your finger (d) it turns blue
  9. 9.⚖️ 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
  10. 10.⚙️ Which of these is a lever? (a) a bottle opener (b) a slide (c) a crane (d) a tap handle
  11. 11.⚙️ Which simple machine is a crowbar? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
  12. 12.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
  13. 13.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) a battery cell (c) a balloon (d) yeast
  14. 14.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
  15. 15.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
  16. 16.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
  17. 17.True or false: string is needed for the thread-reel pulley. (a) True (b) False
  18. 18.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) adds weight (c) changes pull direction (d) makes it magnetic
  19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) a magnet (d) string
  20. 20.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) a battery cell (d) a small paper cup
  21. 21.True or false: yeast is needed for the thread-reel pulley. (a) False (b) True
  22. 22.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) on the blackboard (c) on the flagpole (d) in the tap
  23. 23.⚙️ Which of these is a lever? (a) a ramp (b) a slide (c) a crowbar (d) a doorknob
  24. 24.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) True (b) False
  25. 25.True or false: a see-saw is a lever. (a) False (b) True
  26. 26.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is what we measure. (a) False (b) True
  27. 27.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
  28. 28.True or false: a bottle opener is a lever. (a) False (b) True
  29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we change it (c) we keep it the same
  30. 30.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) double (c) about half (d) zero
  31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) yeast (c) an empty thread reel (d) a small paper cup
  32. 32.⚖️ 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 keep it the same (b) we change it (c) we measure it
  33. 33.⚙️ Which simple machine is a spoon lifting a lid? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
  34. 34.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) nail (c) rope (d) magnet
  35. 35.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a pencil (c) turmeric powder (d) a small paper cup
  36. 36.⚖️ 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
  37. 37.True or false: a ramp is an inclined plane. (a) True (b) False
  38. 38.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
  39. 39.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
  40. 40.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a balloon (c) a small paper cup (d) coins as the load

Answer key

  1. needed
  2. False
  3. a small paper cup
  4. needed
  5. an inclined plane
  6. not needed
  7. coins as the load
  8. it can hurt your finger
  9. True
  10. a bottle opener
  11. a lever
  12. not needed
  13. a pencil
  14. needed
  15. True
  16. False
  17. True
  18. changes pull direction
  19. a magnet
  20. a battery cell
  21. False
  22. on the flagpole
  23. a crowbar
  24. True
  25. True
  26. True
  27. not needed
  28. True
  29. we change it
  30. about half
  31. yeast
  32. we keep it the same
  33. a lever
  34. rope
  35. turmeric powder
  36. False
  37. True
  38. False
  39. not needed
  40. a balloon

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