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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 118 · 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.True or false: a tap handle is a wheel and axle. (a) False (b) True
  2. 2.True or false: a ramp uses a pulley. (a) False (b) True
  3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a pencil (c) yeast (d) an empty thread reel
  4. 4.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
  5. 5.⚖️ 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
  6. 6.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
  7. 7.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
  8. 8.⚙️ Which simple machine is a see-saw? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
  9. 9.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) impossible (c) the same (d) harder
  10. 10.🧺 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) a balloon
  11. 11.⚖️ 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 measure it (b) we keep it the same (c) we change it
  12. 12.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
  13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we keep it the same (b) we measure it (c) we change it
  14. 14.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) down (c) in a circle (d) sideways
  15. 15.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets wet (c) it turns blue (d) it gets longer
  16. 16.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) adds weight (c) makes it magnetic (d) changes pull direction
  17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a pencil (c) an empty thread reel (d) turmeric powder
  18. 18.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a battery cell (c) a pencil (d) a balloon
  19. 19.True or false: a see-saw is a lever. (a) True (b) False
  20. 20.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
  21. 21.⚙️ Which of these uses a pulley? (a) a flagpole (b) a ramp (c) a bottle opener (d) a sloping road
  22. 22.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
  23. 23.⚙️ Which simple machine is a tap handle? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
  24. 24.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
  25. 25.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) an empty thread reel (c) a mirror (d) turmeric powder
  26. 26.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
  27. 27.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False
  28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) False (b) True
  29. 29.⚙️ Which of these is a wheel and axle? (a) a doorknob (b) a bottle opener (c) a spoon lifting a lid (d) a sloping road
  30. 30.True or false: a doorknob is a lever. (a) True (b) False
  31. 31.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
  32. 32.True or false: turmeric powder is not needed for the thread-reel pulley. (a) False (b) True
  33. 33.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
  34. 34.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) an empty thread reel (c) a pencil (d) string
  35. 35.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
  36. 36.🛟 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
  37. 37.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) water gets lighter (c) the bucket floats (d) pulling down is easier
  38. 38.True or false: a steering wheel is a wheel and axle. (a) True (b) False
  39. 39.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
  40. 40.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) False (b) True

Answer key

  1. True
  2. False
  3. yeast
  4. not needed
  5. we measure it
  6. needed
  7. not needed
  8. a lever
  9. harder
  10. a balloon
  11. we keep it the same
  12. False
  13. we keep it the same
  14. down
  15. it can hurt your finger
  16. changes pull direction
  17. turmeric powder
  18. a pencil
  19. True
  20. a wheel and axle
  21. a flagpole
  22. an inclined plane
  23. a wheel and axle
  24. False
  25. an empty thread reel
  26. True
  27. False
  28. True
  29. a doorknob
  30. False
  31. False
  32. True
  33. a lever
  34. a battery cell
  35. False
  36. it could fall on you
  37. pulling down is easier
  38. True
  39. not needed
  40. False

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