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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 490 · 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.⚙️ Which of these is a wheel and axle? (a) a steering wheel (b) a ramp (c) a crowbar (d) a slide
  2. 2.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
  3. 3.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
  4. 4.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
  5. 5.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
  6. 6.⚙️ Which of these is a wheel and axle? (a) a doorknob (b) a well pulley (c) a flagpole (d) a crane
  7. 7.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
  8. 8.True or false: a sloping road uses a pulley. (a) False (b) True
  9. 9.⚙️ Which of these is a lever? (a) a tap handle (b) a crane (c) a doorknob (d) a bottle opener
  10. 10.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) string (c) turmeric powder (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 string”? (a) we measure it (b) we keep it the same (c) we change it
  12. 12.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) in the tap (c) on the flagpole (d) on the blackboard
  13. 13.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
  14. 14.⚖️ 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
  15. 15.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a pencil (c) yeast (d) a magnet
  16. 16.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) harder (c) impossible (d) the same
  17. 17.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) the rope gets shorter (c) pulling down is easier (d) water gets lighter
  18. 18.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it could fall on you (c) it might sing (d) it is magnetic
  19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) an empty thread reel (c) a small paper cup (d) string
  20. 20.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a slide (c) a see-saw (d) a bottle opener
  21. 21.⚖️ 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
  22. 22.True or false: a well pulley uses a pulley. (a) False (b) True
  23. 23.True or false: a see-saw uses a pulley. (a) False (b) True
  24. 24.True or false: a crowbar is a lever. (a) True (b) False
  25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) how hard we must pull (b) number of pulleys (c) the same string
  26. 26.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) a magnet (d) a small paper cup
  27. 27.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False
  28. 28.⚙️ Which simple machine is a well pulley? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
  29. 29.True or false: a see-saw is a lever. (a) True (b) False
  30. 30.🧺 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) string (d) a small paper cup
  31. 31.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a battery cell (c) an empty thread reel (d) coins as the load
  32. 32.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
  33. 33.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
  34. 34.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) changes pull direction (c) makes it magnetic (d) halves the weight
  35. 35.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets wet (c) it gets longer (d) it turns blue
  36. 36.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) an empty thread reel (d) string
  37. 37.True or false: a crowbar uses a pulley. (a) False (b) True
  38. 38.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
  39. 39.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) up (c) sideways (d) down
  40. 40.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) True (b) False

Answer key

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

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