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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 208 · 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) an empty thread reel (c) yeast (d) turmeric powder
  2. 2.⚙️ Which of these is an inclined plane? (a) a ramp (b) a spoon lifting a lid (c) a crowbar (d) a steering wheel
  3. 3.⚖️ 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
  4. 4.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) True (b) False
  5. 5.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we change it (c) we measure it
  6. 6.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) about half (c) double (d) the same
  7. 7.⚙️ Which of these is a lever? (a) a doorknob (b) a slide (c) a well pulley (d) a bottle opener
  8. 8.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
  9. 9.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) string (c) a balloon (d) a battery cell
  10. 10.True or false: a slide is an inclined plane. (a) True (b) False
  11. 11.True or false: a doorknob is a lever. (a) False (b) True
  12. 12.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
  13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) yeast (d) a pencil
  14. 14.🧺 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) turmeric powder (d) a pencil
  15. 15.True or false: a tap handle is a wheel and axle. (a) False (b) True
  16. 16.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) rope (c) magnet (d) battery
  17. 17.⚙️ Which of these uses a pulley? (a) a crane (b) a doorknob (c) a see-saw (d) a slide
  18. 18.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) impossible (c) the same (d) harder
  19. 19.True or false: a crane is a wheel and axle. (a) False (b) True
  20. 20.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) False (b) True
  21. 21.⚙️ Which of these uses a pulley? (a) a slide (b) a flagpole (c) a see-saw (d) a sloping road
  22. 22.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
  23. 23.⚙️ Which of these is a lever? (a) a well pulley (b) a see-saw (c) a doorknob (d) a sloping road
  24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) turmeric powder (c) coins as the load (d) a battery cell
  25. 25.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) coins as the load (c) yeast (d) a pencil
  26. 26.True or false: yeast is not needed for the thread-reel pulley. (a) False (b) True
  27. 27.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it gets wet (c) it can hurt your finger (d) it turns blue
  28. 28.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a bottle opener (c) a slide (d) a flagpole
  29. 29.🧺 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
  30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) coins as the load (c) a magnet (d) a small paper cup
  31. 31.⚙️ Which simple machine is a crane? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
  32. 32.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) a balloon (d) an empty thread reel
  33. 33.⚙️ Which simple machine is a flagpole? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
  34. 34.⚖️ 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
  35. 35.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
  36. 36.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is the one thing we change. (a) False (b) True
  37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) False (b) True
  38. 38.True or false: a slide is a lever. (a) True (b) False
  39. 39.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
  40. 40.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a small paper cup (c) turmeric powder (d) a magnet

Answer key

  1. an empty thread reel
  2. a ramp
  3. False
  4. False
  5. we change it
  6. about half
  7. a bottle opener
  8. False
  9. string
  10. True
  11. False
  12. not needed
  13. yeast
  14. turmeric powder
  15. True
  16. rope
  17. a crane
  18. harder
  19. False
  20. True
  21. a flagpole
  22. needed
  23. a see-saw
  24. coins as the load
  25. yeast
  26. True
  27. it can hurt your finger
  28. a slide
  29. a mirror
  30. a magnet
  31. a pulley
  32. a balloon
  33. a pulley
  34. True
  35. not needed
  36. False
  37. False
  38. False
  39. a lever
  40. a small paper cup

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