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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 572 · 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.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
  2. 2.True or false: a crowbar is an inclined plane. (a) False (b) True
  3. 3.True or false: a ramp is an inclined plane. (a) True (b) False
  4. 4.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
  5. 5.True or false: a doorknob is a wheel and axle. (a) False (b) True
  6. 6.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it can hurt your finger (d) it turns blue
  7. 7.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) string (c) a battery cell (d) a pencil
  8. 8.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 10 cm (c) 5 cm (d) 40 cm
  9. 9.⚖️ 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
  10. 10.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) True (b) False
  11. 11.⚖️ 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
  12. 12.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a tap handle (c) a slide (d) a sloping road
  13. 13.⚙️ Which of these uses a pulley? (a) a ramp (b) a slide (c) a flagpole (d) a tap handle
  14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is what we measure. (a) True (b) False
  15. 15.True or false: a flagpole is a lever. (a) True (b) False
  16. 16.⚙️ Which of these is a lever? (a) a steering wheel (b) a see-saw (c) a doorknob (d) a crane
  17. 17.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
  18. 18.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a mirror (c) a pencil (d) string
  19. 19.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) number of pulleys (b) how hard we must pull (c) the same string (d) the same cup of coins
  20. 20.⚖️ 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
  21. 21.⚙️ Which simple machine is a flagpole? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
  22. 22.⚙️ Which simple machine is a ramp? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
  23. 23.⚙️ Which of these is a wheel and axle? (a) a crane (b) a see-saw (c) a doorknob (d) a spoon lifting a lid
  24. 24.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same cup of coins (b) number of pulleys (c) the lifting height (d) how hard we must pull
  25. 25.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
  26. 26.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) the same (c) zero (d) double
  27. 27.True or false: a slide is an inclined plane. (a) False (b) True
  28. 28.⚖️ 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
  29. 29.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a mirror (c) a pencil (d) turmeric powder
  30. 30.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
  31. 31.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) harder (c) the same (d) impossible
  32. 32.True or false: a mirror is not needed for the thread-reel pulley. (a) True (b) False
  33. 33.True or false: a sloping road is a wheel and axle. (a) False (b) True
  34. 34.True or false: a crane uses a pulley. (a) False (b) True
  35. 35.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a bottle opener (c) a well pulley (d) a sloping road
  36. 36.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a battery cell (c) an empty thread reel (d) a mirror
  37. 37.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) magnet (c) nail (d) battery
  38. 38.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
  39. 39.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) in a circle (c) up (d) down
  40. 40.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever

Answer key

  1. False
  2. False
  3. True
  4. False
  5. True
  6. it can hurt your finger
  7. a battery cell
  8. 20 cm
  9. we keep it the same
  10. False
  11. True
  12. a tap handle
  13. a flagpole
  14. False
  15. False
  16. a see-saw
  17. False
  18. a mirror
  19. number of pulleys
  20. True
  21. a pulley
  22. an inclined plane
  23. a doorknob
  24. how hard we must pull
  25. False
  26. about half
  27. True
  28. we keep it the same
  29. a pencil
  30. needed
  31. harder
  32. True
  33. False
  34. True
  35. a sloping road
  36. an empty thread reel
  37. rope
  38. not needed
  39. down
  40. a wheel and axle

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