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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 406 · 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: string is not needed for the thread-reel pulley. (a) True (b) False
  2. 2.⚙️ Which simple machine is a tap handle? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
  3. 3.⚙️ Which of these uses a pulley? (a) a see-saw (b) a slide (c) a flagpole (d) a bottle opener
  4. 4.⚙️ Which simple machine is a crane? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
  5. 5.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
  6. 6.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
  7. 7.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) changes pull direction (c) makes it magnetic (d) halves the weight
  8. 8.True or false: a crowbar uses a pulley. (a) False (b) True
  9. 9.⚙️ Which of these is a wheel and axle? (a) a well pulley (b) a steering wheel (c) a crowbar (d) a crane
  10. 10.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
  11. 11.True or false: a spoon lifting a lid uses a pulley. (a) True (b) False
  12. 12.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) the rope gets shorter (c) water gets lighter (d) pulling down is easier
  13. 13.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) down (b) in a circle (c) up (d) sideways
  14. 14.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a small paper cup (c) a magnet (d) a battery cell
  15. 15.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) an empty thread reel (c) string (d) turmeric powder
  16. 16.True or false: a see-saw is a lever. (a) False (b) True
  17. 17.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is kept the same. (a) True (b) False
  18. 18.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we measure it (b) we keep it the same (c) we change it
  19. 19.True or false: coins as the load is needed for the thread-reel pulley. (a) True (b) False
  20. 20.⚖️ 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 measure it (c) we keep it the same
  21. 21.True or false: a crane is a lever. (a) True (b) False
  22. 22.True or false: a slide uses a pulley. (a) False (b) True
  23. 23.🧺 Which of these is not needed for the thread-reel pulley? (a) a mirror (b) an empty thread reel (c) a pencil (d) coins as the load
  24. 24.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it turns blue (c) it gets wet (d) it gets longer
  25. 25.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
  26. 26.True or false: a tap handle is a lever. (a) False (b) True
  27. 27.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
  28. 28.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
  29. 29.⚙️ Which of these uses a pulley? (a) a tap handle (b) a sloping road (c) a see-saw (d) a crane
  30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a mirror (c) a pencil (d) an empty thread reel
  31. 31.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) True (b) False
  32. 32.⚙️ Which simple machine is a crowbar? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
  33. 33.⚙️ Which simple machine is a slide? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
  34. 34.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
  35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) False (b) True
  36. 36.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 5 cm (c) 10 cm (d) 20 cm
  37. 37.True or false: coins as the load is not 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? True or false: number of pulleys is the one thing we change. (a) True (b) False
  39. 39.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
  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. False
  2. a wheel and axle
  3. a flagpole
  4. a pulley
  5. False
  6. needed
  7. changes pull direction
  8. False
  9. a steering wheel
  10. a wheel and axle
  11. False
  12. pulling down is easier
  13. down
  14. a small paper cup
  15. turmeric powder
  16. True
  17. True
  18. we keep it the same
  19. True
  20. we keep it the same
  21. False
  22. False
  23. a mirror
  24. it can hurt your finger
  25. not needed
  26. False
  27. False
  28. a pulley
  29. a crane
  30. a mirror
  31. False
  32. a lever
  33. an inclined plane
  34. an inclined plane
  35. False
  36. 20 cm
  37. False
  38. True
  39. not needed
  40. False

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