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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 289 · 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.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) string (c) a balloon (d) a small paper cup
  2. 2.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a magnet (c) a pencil (d) string
  3. 3.⚖️ 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 measure it (b) we keep it the same (c) we change it
  4. 4.⚙️ Which of these is a lever? (a) a tap handle (b) a steering wheel (c) a crane (d) a spoon lifting a lid
  5. 5.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) string (c) a mirror (d) a battery cell
  6. 6.🧺 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) string (d) yeast
  7. 7.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) impossible (c) the same (d) harder
  8. 8.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
  9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we measure it (b) we change it (c) we keep it the same
  10. 10.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a battery cell (c) coins as the load (d) turmeric powder
  11. 11.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it turns blue (c) it can hurt your finger (d) it gets wet
  12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a small paper cup (c) string (d) turmeric powder
  13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is kept the same. (a) True (b) False
  14. 14.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 40 cm (c) 20 cm (d) 5 cm
  15. 15.True or false: a slide is an inclined plane. (a) True (b) False
  16. 16.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
  17. 17.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
  18. 18.True or false: a see-saw is an inclined plane. (a) True (b) False
  19. 19.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
  20. 20.True or false: a crane uses a pulley. (a) False (b) True
  21. 21.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
  22. 22.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
  23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) a small paper cup (d) a magnet
  24. 24.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
  25. 25.⚖️ 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
  26. 26.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it might sing (c) it could fall on you (d) it is magnetic
  27. 27.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
  28. 28.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
  29. 29.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
  30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a battery cell (c) an empty thread reel (d) a pencil
  31. 31.⚙️ Which of these is a wheel and axle? (a) a tap handle (b) a slide (c) a well pulley (d) a see-saw
  32. 32.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
  33. 33.⚙️ Which simple machine is a ramp? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
  34. 34.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
  35. 35.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) battery (c) rope (d) magnet
  36. 36.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
  37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) number of pulleys (b) the same string (c) the lifting height (d) how hard we must pull
  38. 38.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) False (b) True
  39. 39.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
  40. 40.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) True (b) False

Answer key

  1. a balloon
  2. a magnet
  3. we measure it
  4. a spoon lifting a lid
  5. string
  6. yeast
  7. harder
  8. needed
  9. we keep it the same
  10. coins as the load
  11. it can hurt your finger
  12. turmeric powder
  13. False
  14. 20 cm
  15. True
  16. not needed
  17. True
  18. False
  19. needed
  20. True
  21. not needed
  22. not needed
  23. a magnet
  24. a lever
  25. we keep it the same
  26. it could fall on you
  27. False
  28. not needed
  29. a lever
  30. a battery cell
  31. a tap handle
  32. a pulley
  33. an inclined plane
  34. False
  35. rope
  36. True
  37. how hard we must pull
  38. True
  39. needed
  40. False

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