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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 375 · 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.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
  2. 2.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) rope (c) magnet (d) battery
  3. 3.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
  4. 4.⚙️ Which of these uses a pulley? (a) a well pulley (b) a crowbar (c) a ramp (d) a doorknob
  5. 5.⚙️ Which simple machine is a crowbar? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
  6. 6.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
  7. 7.⚙️ Which simple machine is a slide? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
  8. 8.⚙️ Which simple machine is a sloping road? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
  9. 9.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
  10. 10.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
  11. 11.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
  12. 12.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
  13. 13.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
  14. 14.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
  15. 15.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it could fall on you (c) it is magnetic (d) it gets hot
  16. 16.⚖️ 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 change it (b) we measure it (c) we keep it the same
  17. 17.⚙️ Which of these is a wheel and axle? (a) a bottle opener (b) a see-saw (c) a doorknob (d) a ramp
  18. 18.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a balloon (c) a battery cell (d) a pencil
  19. 19.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
  20. 20.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) number of pulleys (b) the same cup of coins (c) how hard we must pull
  21. 21.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) turmeric powder (c) a battery cell (d) an empty thread reel
  22. 22.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) an empty thread reel (c) a pencil (d) coins as the load
  23. 23.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
  24. 24.True or false: a battery cell is needed for the thread-reel pulley. (a) False (b) True
  25. 25.⚙️ Which simple machine is a ramp? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
  26. 26.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is what we measure. (a) True (b) False
  27. 27.True or false: a crowbar is a lever. (a) True (b) False
  28. 28.True or false: a well pulley is a wheel and axle. (a) False (b) True
  29. 29.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
  30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is the one thing we change. (a) True (b) False
  31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a pencil (c) a balloon (d) coins as the load
  32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we change it (b) we keep it the same (c) we measure it
  33. 33.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
  34. 34.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a doorknob (c) a slide (d) a flagpole
  35. 35.True or false: string is needed for the thread-reel pulley. (a) True (b) False
  36. 36.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) sideways (c) down (d) in a circle
  37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is the one thing we change. (a) False (b) True
  38. 38.True or false: a slide is a lever. (a) False (b) True
  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) how hard we must pull (b) the lifting height (c) the same cup of coins (d) number of pulleys
  40. 40.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) the same (c) about half (d) zero

Answer key

  1. False
  2. rope
  3. True
  4. a well pulley
  5. a lever
  6. needed
  7. an inclined plane
  8. an inclined plane
  9. True
  10. not needed
  11. False
  12. True
  13. True
  14. needed
  15. it could fall on you
  16. we measure it
  17. a doorknob
  18. a pencil
  19. a lever
  20. the same cup of coins
  21. an empty thread reel
  22. turmeric powder
  23. not needed
  24. False
  25. an inclined plane
  26. False
  27. True
  28. False
  29. False
  30. True
  31. a balloon
  32. we keep it the same
  33. True
  34. a slide
  35. True
  36. down
  37. False
  38. False
  39. number of pulleys
  40. about half

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