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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 680 · 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.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) turmeric powder (c) a balloon (d) a small paper cup
  2. 2.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
  3. 3.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
  4. 4.⚙️ Which simple machine is a tap handle? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
  5. 5.⚙️ Which of these is an inclined plane? (a) a ramp (b) a spoon lifting a lid (c) a crane (d) a steering wheel
  6. 6.🧺 Which of these is not needed for the thread-reel pulley? (a) turmeric powder (b) a small paper cup (c) an empty thread reel (d) string
  7. 7.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 10 cm (c) 40 cm (d) 5 cm
  8. 8.⚖️ 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) False (b) True
  9. 9.True or false: coins as the load is needed for the thread-reel pulley. (a) False (b) True
  10. 10.⚙️ Which simple machine is a ramp? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
  11. 11.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
  12. 12.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it gets wet (c) it turns blue (d) it can hurt your finger
  13. 13.⚙️ Which of these is a lever? (a) a spoon lifting a lid (b) a tap handle (c) a crane (d) a doorknob
  14. 14.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) a pencil (d) a battery cell
  15. 15.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) pulling down is easier (c) the bucket floats (d) the rope gets shorter
  16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) turmeric powder (d) string
  17. 17.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we keep it the same (c) we change it
  18. 18.True or false: a crowbar is a lever. (a) False (b) True
  19. 19.True or false: a tap handle is a lever. (a) True (b) False
  20. 20.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
  21. 21.True or false: a spoon lifting a lid is a wheel and axle. (a) True (b) False
  22. 22.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) nail (c) rope (d) battery
  23. 23.⚙️ Which of these is a lever? (a) a doorknob (b) a crane (c) a see-saw (d) a flagpole
  24. 24.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
  25. 25.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
  26. 26.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) adds weight (c) halves the weight (d) changes pull direction
  27. 27.⚖️ 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
  28. 28.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
  29. 29.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) impossible (d) easier
  30. 30.⚖️ 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
  31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) a balloon (d) an empty thread reel
  32. 32.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it gets hot (c) it might sing (d) it could fall on you
  33. 33.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) number of pulleys (b) how hard we must pull (c) the lifting height (d) the same cup of coins
  34. 34.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
  35. 35.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
  36. 36.True or false: a steering wheel is a wheel and axle. (a) True (b) False
  37. 37.⚙️ Which simple machine is a see-saw? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
  38. 38.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a magnet (c) coins as the load (d) turmeric powder
  39. 39.True or false: a tap handle is an inclined plane. (a) True (b) False
  40. 40.True or false: a bottle opener uses a pulley. (a) False (b) True

Answer key

  1. a small paper cup
  2. False
  3. needed
  4. a wheel and axle
  5. a ramp
  6. turmeric powder
  7. 20 cm
  8. True
  9. True
  10. an inclined plane
  11. a lever
  12. it can hurt your finger
  13. a spoon lifting a lid
  14. a battery cell
  15. pulling down is easier
  16. turmeric powder
  17. we change it
  18. True
  19. False
  20. False
  21. False
  22. rope
  23. a see-saw
  24. needed
  25. not needed
  26. changes pull direction
  27. False
  28. False
  29. harder
  30. False
  31. a balloon
  32. it could fall on you
  33. how hard we must pull
  34. needed
  35. needed
  36. True
  37. a lever
  38. coins as the load
  39. False
  40. False

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