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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 879 · 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.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we change it (b) we measure it (c) we keep it the same
  2. 2.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) double (c) the same (d) zero
  3. 3.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
  4. 4.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
  5. 5.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
  6. 6.True or false: coins as the load is needed for the thread-reel pulley. (a) False (b) True
  7. 7.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a pencil (c) an empty thread reel (d) a mirror
  8. 8.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets longer (c) it can hurt your finger (d) it gets wet
  9. 9.True or false: a slide is an inclined plane. (a) False (b) True
  10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a small paper cup (c) an empty thread reel (d) a magnet
  11. 11.⚙️ Which of these is a lever? (a) a slide (b) a sloping road (c) a bottle opener (d) a crane
  12. 12.🛟 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
  13. 13.⚙️ Which of these is an inclined plane? (a) a bottle opener (b) a ramp (c) a doorknob (d) a well pulley
  14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same string (b) number of pulleys (c) how hard we must pull (d) the lifting height
  15. 15.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) on the blackboard (c) on the flagpole (d) in the tap
  16. 16.True or false: a sloping road is a wheel and axle. (a) False (b) True
  17. 17.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
  18. 18.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
  19. 19.⚙️ Which simple machine is a flagpole? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
  20. 20.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) makes it magnetic (c) adds weight (d) changes pull direction
  21. 21.⚖️ 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 keep it the same (c) we change it
  22. 22.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
  23. 23.True or false: a crane uses a pulley. (a) True (b) False
  24. 24.⚙️ Which simple machine is a bottle opener? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
  25. 25.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) yeast (c) a mirror (d) a small paper cup
  26. 26.⚖️ 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 keep it the same (b) we measure it (c) we change it
  27. 27.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True
  28. 28.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
  29. 29.⚙️ Which of these is an inclined plane? (a) a well pulley (b) a bottle opener (c) a sloping road (d) a doorknob
  30. 30.True or false: a crane is a lever. (a) True (b) False
  31. 31.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
  32. 32.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a spoon lifting a lid (c) a flagpole (d) a ramp
  33. 33.True or false: a sloping road is an inclined plane. (a) False (b) True
  34. 34.True or false: a steering wheel is a lever. (a) False (b) True
  35. 35.⚖️ 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
  36. 36.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
  37. 37.⚖️ 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 keep it the same (b) we measure it (c) we change it
  38. 38.⚙️ Which of these is a lever? (a) a flagpole (b) a steering wheel (c) a see-saw (d) a doorknob
  39. 39.⚙️ Which of these is a lever? (a) a crane (b) a well pulley (c) a crowbar (d) a slide
  40. 40.⚖️ 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) True (b) False

Answer key

  1. we change it
  2. about half
  3. a lever
  4. False
  5. needed
  6. True
  7. a mirror
  8. it can hurt your finger
  9. True
  10. a magnet
  11. a bottle opener
  12. it could fall on you
  13. a ramp
  14. how hard we must pull
  15. on the flagpole
  16. False
  17. False
  18. needed
  19. a pulley
  20. changes pull direction
  21. we keep it the same
  22. False
  23. True
  24. a lever
  25. a small paper cup
  26. we measure it
  27. False
  28. not needed
  29. a sloping road
  30. False
  31. True
  32. a flagpole
  33. True
  34. False
  35. False
  36. a lever
  37. we keep it the same
  38. a see-saw
  39. a crowbar
  40. False

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