← Thread-reel pulley lesson New set →

Pulley STEM Project Worksheet

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

Answer key

  1. False
  2. True
  3. we keep it the same
  4. a magnet
  5. a mirror
  6. not needed
  7. a battery cell
  8. a pulley
  9. a lever
  10. a flagpole
  11. a wheel and axle
  12. a pulley
  13. True
  14. True
  15. False
  16. harder
  17. it can hurt your finger
  18. a lever
  19. not needed
  20. turmeric powder
  21. a doorknob
  22. we change it
  23. a well pulley
  24. how hard we must pull
  25. not needed
  26. not needed
  27. coins as the load
  28. True
  29. about half
  30. pulling down is easier
  31. needed
  32. False
  33. not needed
  34. False
  35. a bottle opener
  36. a crowbar
  37. yeast
  38. we keep it the same
  39. yeast
  40. down

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids