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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 100 · 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.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) an empty thread reel (d) a balloon
  2. 2.True or false: a see-saw is a lever. (a) False (b) True
  3. 3.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) rope (c) nail (d) battery
  4. 4.True or false: a slide is an inclined plane. (a) True (b) False
  5. 5.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it is magnetic (c) it might sing (d) it could fall on you
  6. 6.True or false: a doorknob is a wheel and axle. (a) True (b) False
  7. 7.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a slide (c) a well pulley (d) a tap handle
  8. 8.⚙️ Which simple machine is a crowbar? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
  9. 9.🛟 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
  10. 10.⚖️ 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) True (b) False
  11. 11.⚙️ Which of these is an inclined plane? (a) a ramp (b) a bottle opener (c) a see-saw (d) a well pulley
  12. 12.⚖️ 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) the lifting height (c) the same string (d) how hard we must pull
  13. 13.True or false: a doorknob uses a pulley. (a) True (b) False
  14. 14.⚙️ Which simple machine is a flagpole? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
  15. 15.⚙️ Which of these is an inclined plane? (a) a doorknob (b) a slide (c) a steering wheel (d) a crowbar
  16. 16.True or false: coins as the load is needed for the thread-reel pulley. (a) True (b) False
  17. 17.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) in the tap (c) on the blackboard (d) on the bench
  18. 18.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) a battery cell (d) a pencil
  19. 19.⚙️ Which of these uses a pulley? (a) a ramp (b) a bottle opener (c) a sloping road (d) a flagpole
  20. 20.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
  21. 21.⚙️ Which simple machine is a sloping road? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
  22. 22.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
  23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) a magnet (d) coins as the load
  24. 24.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
  25. 25.🧺 Which of these is needed for the thread-reel pulley? (a) an empty thread reel (b) a battery cell (c) turmeric powder (d) a mirror
  26. 26.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a see-saw (c) a sloping road (d) a doorknob
  27. 27.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
  28. 28.🧺 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) a pencil (d) yeast
  29. 29.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
  30. 30.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
  31. 31.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
  32. 32.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) zero (c) the same (d) about half
  33. 33.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
  34. 34.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) easier (c) impossible (d) the same
  35. 35.⚖️ 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
  36. 36.True or false: a crane uses a pulley. (a) True (b) False
  37. 37.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) an empty thread reel (c) coins as the load (d) string
  38. 38.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) yeast (c) a pencil (d) a balloon
  39. 39.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
  40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) coins as the load (c) string (d) a small paper cup

Answer key

  1. a balloon
  2. True
  3. rope
  4. True
  5. it could fall on you
  6. True
  7. a tap handle
  8. a lever
  9. it can hurt your finger
  10. False
  11. a ramp
  12. how hard we must pull
  13. False
  14. a pulley
  15. a slide
  16. True
  17. on the flagpole
  18. a battery cell
  19. a flagpole
  20. True
  21. an inclined plane
  22. not needed
  23. a magnet
  24. False
  25. an empty thread reel
  26. a doorknob
  27. needed
  28. yeast
  29. a lever
  30. needed
  31. a pulley
  32. about half
  33. False
  34. harder
  35. True
  36. True
  37. a mirror
  38. a pencil
  39. not needed
  40. turmeric powder

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