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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 316 · 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: a ramp is an inclined plane. (a) False (b) True
  2. 2.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
  3. 3.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
  4. 4.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) impossible (c) the same (d) harder
  5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a balloon (c) string (d) a small paper cup
  6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) a magnet (d) coins as the load
  7. 7.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) double (c) about half (d) zero
  8. 8.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
  9. 9.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) coins as the load (c) yeast (d) a pencil
  10. 10.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it gets hot (c) it might sing (d) it is magnetic
  11. 11.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it can hurt your finger (c) it gets wet (d) it turns blue
  12. 12.True or false: a battery cell is not needed for the thread-reel pulley. (a) False (b) True
  13. 13.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
  14. 14.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
  15. 15.⚖️ 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 change it (c) we keep it the same
  16. 16.⚙️ Which of these uses a pulley? (a) a see-saw (b) a flagpole (c) a crowbar (d) a spoon lifting a lid
  17. 17.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
  18. 18.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a balloon (c) a pencil (d) a small paper cup
  19. 19.⚙️ Which simple machine is a see-saw? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
  20. 20.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we measure it (c) we keep it the same
  21. 21.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
  22. 22.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
  23. 23.⚖️ 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
  24. 24.⚖️ 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) the same string (c) number of pulleys (d) how hard we must pull
  25. 25.🧺 Which of these is needed for the thread-reel pulley? (a) a small paper cup (b) a balloon (c) a magnet (d) yeast
  26. 26.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
  27. 27.True or false: a spoon lifting a lid is a lever. (a) False (b) True
  28. 28.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) turmeric powder (c) a pencil (d) yeast
  29. 29.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) coins as the load (d) a mirror
  30. 30.⚙️ Which of these uses a pulley? (a) a sloping road (b) a see-saw (c) a well pulley (d) a bottle opener
  31. 31.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) battery (c) rope (d) nail
  32. 32.True or false: turmeric powder is not needed for the thread-reel pulley. (a) False (b) True
  33. 33.True or false: a see-saw uses a pulley. (a) False (b) True
  34. 34.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
  35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is the one thing we change. (a) False (b) True
  36. 36.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
  37. 37.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
  38. 38.⚖️ 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 same cup of coins (c) the same string (d) number of pulleys
  39. 39.⚖️ 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
  40. 40.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever

Answer key

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

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