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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 495 · 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 mirror 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: the lifting height is kept the same. (a) False (b) True
  3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a small paper cup (c) turmeric powder (d) an empty thread reel
  4. 4.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it could fall on you (c) it gets hot (d) it might sing
  5. 5.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
  6. 6.True or false: a see-saw uses a pulley. (a) False (b) True
  7. 7.⚙️ Which simple machine is a ramp? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
  8. 8.🔮 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
  9. 9.True or false: a spoon lifting a lid uses a pulley. (a) True (b) False
  10. 10.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same string (b) the same cup of coins (c) number of pulleys (d) how hard we must pull
  11. 11.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it turns blue (c) it can hurt your finger (d) it gets longer
  12. 12.⚙️ Which of these is an inclined plane? (a) a well pulley (b) a see-saw (c) a slide (d) a tap handle
  13. 13.True or false: a tap handle is a lever. (a) True (b) False
  14. 14.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
  15. 15.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a small paper cup (c) yeast (d) coins as the load
  16. 16.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) False (b) True
  17. 17.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
  18. 18.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
  19. 19.⚖️ 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
  20. 20.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a tap handle (c) a spoon lifting a lid (d) a see-saw
  21. 21.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) in the tap (c) on the bench (d) on the blackboard
  22. 22.⚙️ Which simple machine is a crane? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
  23. 23.⚙️ Which of these is a lever? (a) a crane (b) a ramp (c) a see-saw (d) a steering wheel
  24. 24.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
  25. 25.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a battery cell (c) a pencil (d) an empty thread reel
  26. 26.⚖️ 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) number of pulleys (c) the same string (d) how hard we must pull
  27. 27.⚙️ Which simple machine is a spoon lifting a lid? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
  28. 28.True or false: a well pulley uses a pulley. (a) True (b) False
  29. 29.True or false: a tap handle is a wheel and axle. (a) True (b) False
  30. 30.⚙️ Which of these is a lever? (a) a ramp (b) a well pulley (c) a bottle opener (d) a sloping road
  31. 31.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
  32. 32.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) yeast (c) a small paper cup (d) string
  33. 33.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is kept the same. (a) False (b) True
  34. 34.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) coins as the load (c) a mirror (d) string
  35. 35.True or false: a slide is a lever. (a) True (b) False
  36. 36.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
  37. 37.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) makes it magnetic (c) halves the weight (d) adds weight
  38. 38.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
  39. 39.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
  40. 40.True or false: a slide is an inclined plane. (a) False (b) True

Answer key

  1. not needed
  2. True
  3. turmeric powder
  4. it could fall on you
  5. not needed
  6. False
  7. an inclined plane
  8. 20 cm
  9. False
  10. how hard we must pull
  11. it can hurt your finger
  12. a slide
  13. False
  14. needed
  15. yeast
  16. False
  17. needed
  18. a lever
  19. we keep it the same
  20. a tap handle
  21. on the flagpole
  22. a pulley
  23. a see-saw
  24. not needed
  25. a battery cell
  26. number of pulleys
  27. a lever
  28. True
  29. True
  30. a bottle opener
  31. True
  32. yeast
  33. True
  34. a mirror
  35. False
  36. a lever
  37. changes pull direction
  38. needed
  39. False
  40. True

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