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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 937 · 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.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) rope (c) nail (d) magnet
  2. 2.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a magnet (c) an empty thread reel (d) turmeric powder
  3. 3.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 20 cm (c) 10 cm (d) 40 cm
  4. 4.⚙️ Which simple machine is a slide? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
  5. 5.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
  6. 6.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) a magnet (c) turmeric powder (d) a balloon
  7. 7.⚙️ Which simple machine is a sloping road? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
  8. 8.⚙️ Which simple machine is a steering wheel? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
  9. 9.True or false: a doorknob is a wheel and axle. (a) True (b) False
  10. 10.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) how hard we must pull (b) the lifting height (c) number of pulleys
  11. 11.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
  12. 12.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets wet (c) it turns blue (d) it gets longer
  13. 13.⚖️ 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
  14. 14.True or false: a steering wheel uses a pulley. (a) False (b) True
  15. 15.True or false: a crowbar uses a pulley. (a) True (b) False
  16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) coins as the load (d) an empty thread reel
  17. 17.⚙️ Which of these uses a pulley? (a) a slide (b) a crane (c) a see-saw (d) a spoon lifting a lid
  18. 18.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) a small paper cup (c) an empty thread reel (d) coins as the load
  19. 19.True or false: string is needed for the thread-reel pulley. (a) False (b) True
  20. 20.⚙️ Which of these uses a pulley? (a) a slide (b) a flagpole (c) a crowbar (d) a see-saw
  21. 21.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
  22. 22.⚙️ Which of these is a lever? (a) a bottle opener (b) a tap handle (c) a ramp (d) a well pulley
  23. 23.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
  24. 24.True or false: a tap handle is a lever. (a) False (b) True
  25. 25.⚙️ Which simple machine is a well pulley? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
  26. 26.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
  27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same cup of coins (b) number of pulleys (c) how hard we must pull
  28. 28.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) impossible (c) easier (d) the same
  29. 29.🛟 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
  30. 30.⚖️ 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
  31. 31.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a mirror (c) string (d) yeast
  32. 32.⚙️ Which of these is an inclined plane? (a) a bottle opener (b) a crowbar (c) a ramp (d) a steering wheel
  33. 33.⚙️ Which of these is a lever? (a) a ramp (b) a well pulley (c) a steering wheel (d) a see-saw
  34. 34.True or false: coins as the load is needed for the thread-reel pulley. (a) False (b) True
  35. 35.True or false: a flagpole uses a pulley. (a) True (b) False
  36. 36.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) a mirror (d) a small paper cup
  37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same cup of coins (b) how hard we must pull (c) the same string (d) the lifting height
  38. 38.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
  39. 39.⚖️ 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 lifting height (c) number of pulleys (d) how hard we must pull
  40. 40.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed

Answer key

  1. rope
  2. an empty thread reel
  3. 20 cm
  4. an inclined plane
  5. a pulley
  6. a pencil
  7. an inclined plane
  8. a wheel and axle
  9. True
  10. the lifting height
  11. True
  12. it can hurt your finger
  13. False
  14. False
  15. False
  16. turmeric powder
  17. a crane
  18. a balloon
  19. True
  20. a flagpole
  21. a lever
  22. a bottle opener
  23. False
  24. False
  25. a pulley
  26. False
  27. the same cup of coins
  28. harder
  29. it could fall on you
  30. True
  31. string
  32. a ramp
  33. a see-saw
  34. True
  35. True
  36. a mirror
  37. how hard we must pull
  38. needed
  39. number of pulleys
  40. needed

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