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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 190 · 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.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) a pencil (c) a small paper cup (d) string
  2. 2.🏗️ 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
  3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) True (b) False
  4. 4.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a battery cell (c) an empty thread reel (d) a pencil
  5. 5.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a balloon (c) coins as the load (d) yeast
  6. 6.⚖️ 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 cup of coins (b) the lifting height (c) the same string (d) number of pulleys
  7. 7.True or false: a crane uses a pulley. (a) True (b) False
  8. 8.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) makes it magnetic (c) adds weight (d) halves the weight
  9. 9.True or false: a see-saw is a wheel and axle. (a) False (b) True
  10. 10.⚙️ Which of these is a lever? (a) a crane (b) a spoon lifting a lid (c) a steering wheel (d) a well pulley
  11. 11.⚙️ Which of these is a lever? (a) a well pulley (b) a bottle opener (c) a flagpole (d) a steering wheel
  12. 12.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 40 cm (c) 10 cm (d) 5 cm
  13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) turmeric powder (c) a small paper cup (d) a pencil
  14. 14.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
  15. 15.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the blackboard (c) on the bench (d) in the tap
  16. 16.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a battery cell (c) a balloon (d) a small paper cup
  17. 17.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) magnet (c) rope (d) nail
  18. 18.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a ramp (c) a slide (d) a doorknob
  19. 19.⚙️ Which simple machine is a well pulley? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
  20. 20.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
  21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a mirror (c) coins as the load (d) a small paper cup
  22. 22.🛟 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
  23. 23.True or false: a crowbar is a lever. (a) False (b) True
  24. 24.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it is magnetic (c) it might sing (d) it could fall on you
  25. 25.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a balloon (c) a small paper cup (d) string
  26. 26.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
  27. 27.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) string (c) a pencil (d) turmeric powder
  28. 28.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
  29. 29.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
  30. 30.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
  31. 31.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
  32. 32.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
  33. 33.True or false: a sloping road is an inclined plane. (a) True (b) False
  34. 34.🧺 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) a magnet
  35. 35.⚙️ Which of these is an inclined plane? (a) a sloping road (b) a crane (c) a tap handle (d) a steering wheel
  36. 36.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) zero (c) double (d) about half
  37. 37.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
  38. 38.True or false: a bottle opener is an inclined plane. (a) True (b) False
  39. 39.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False
  40. 40.⚙️ Which simple machine is a crane? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever

Answer key

  1. a balloon
  2. pulling down is easier
  3. False
  4. a battery cell
  5. coins as the load
  6. number of pulleys
  7. True
  8. changes pull direction
  9. False
  10. a spoon lifting a lid
  11. a bottle opener
  12. 20 cm
  13. turmeric powder
  14. False
  15. on the flagpole
  16. a small paper cup
  17. rope
  18. a doorknob
  19. a pulley
  20. False
  21. a mirror
  22. it can hurt your finger
  23. True
  24. it could fall on you
  25. a balloon
  26. False
  27. turmeric powder
  28. True
  29. a pulley
  30. False
  31. needed
  32. True
  33. True
  34. a magnet
  35. a sloping road
  36. about half
  37. not needed
  38. False
  39. False
  40. a pulley

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