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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 182 · 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.🔮 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
  2. 2.⚙️ Which of these is a lever? (a) a tap handle (b) a crowbar (c) a crane (d) a flagpole
  3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) how hard we must pull (b) number of pulleys (c) the same string (d) the same cup of coins
  4. 4.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets longer (c) it gets wet (d) it turns blue
  5. 5.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) turmeric powder (c) a mirror (d) a small paper cup
  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 lifting height (b) how hard we must pull (c) the same cup of coins (d) number of pulleys
  7. 7.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
  8. 8.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) zero (c) the same (d) about half
  9. 9.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
  10. 10.⚖️ 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
  11. 11.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) a pencil (c) an empty thread reel (d) coins as the load
  12. 12.True or false: a flagpole is a lever. (a) False (b) True
  13. 13.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) an empty thread reel (c) a balloon (d) a pencil
  14. 14.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) rope (c) battery (d) magnet
  15. 15.⚙️ Which simple machine is a sloping road? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
  16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a balloon (c) a small paper cup (d) coins as the load
  17. 17.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
  18. 18.⚖️ 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) True (b) False
  19. 19.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
  20. 20.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it might sing (c) it is magnetic (d) it gets hot
  21. 21.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the blackboard (c) in the tap (d) on the bench
  22. 22.True or false: a well pulley is a lever. (a) True (b) False
  23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) coins as the load (c) a magnet (d) a pencil
  24. 24.True or false: string is needed for the thread-reel pulley. (a) False (b) True
  25. 25.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
  26. 26.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) easier (c) harder (d) the same
  27. 27.True or false: a steering wheel is a wheel and axle. (a) False (b) True
  28. 28.🧺 Which of these is needed for the thread-reel pulley? (a) an empty thread reel (b) a balloon (c) a magnet (d) a battery cell
  29. 29.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
  30. 30.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
  31. 31.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a pencil (c) an empty thread reel (d) a battery cell
  32. 32.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
  33. 33.True or false: a see-saw uses a pulley. (a) False (b) True
  34. 34.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a battery cell (c) a pencil (d) a balloon
  35. 35.True or false: yeast is not needed for the thread-reel pulley. (a) False (b) True
  36. 36.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
  37. 37.True or false: a slide uses a pulley. (a) False (b) True
  38. 38.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) a small paper cup (d) yeast
  39. 39.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
  40. 40.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley

Answer key

  1. 20 cm
  2. a crowbar
  3. how hard we must pull
  4. it can hurt your finger
  5. a small paper cup
  6. number of pulleys
  7. not needed
  8. about half
  9. needed
  10. False
  11. a battery cell
  12. False
  13. a balloon
  14. rope
  15. an inclined plane
  16. a balloon
  17. not needed
  18. True
  19. False
  20. it could fall on you
  21. on the flagpole
  22. False
  23. a magnet
  24. True
  25. not needed
  26. harder
  27. True
  28. an empty thread reel
  29. True
  30. True
  31. a battery cell
  32. False
  33. False
  34. a pencil
  35. True
  36. False
  37. False
  38. yeast
  39. needed
  40. a lever

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