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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 996 · 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.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it turns blue (c) it gets longer (d) it gets wet
  2. 2.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
  3. 3.True or false: a crowbar is a lever. (a) False (b) True
  4. 4.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
  5. 5.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
  6. 6.🛟 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
  7. 7.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a magnet (c) coins as the load (d) a small paper cup
  8. 8.⚙️ Which simple machine is a slide? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
  9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) turmeric powder (d) an empty thread reel
  10. 10.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) down (c) in a circle (d) sideways
  11. 11.⚙️ Which simple machine is a well pulley? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
  12. 12.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the flagpole (c) on the blackboard (d) on the bench
  13. 13.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) coins as the load (c) an empty thread reel (d) a balloon
  14. 14.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
  15. 15.⚙️ Which of these is a wheel and axle? (a) a slide (b) a doorknob (c) a crowbar (d) a ramp
  16. 16.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) battery (c) nail (d) rope
  17. 17.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
  18. 18.True or false: a bottle opener is a lever. (a) True (b) False
  19. 19.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a mirror (c) string (d) yeast
  20. 20.⚙️ Which of these uses a pulley? (a) a doorknob (b) a crowbar (c) a well pulley (d) a bottle opener
  21. 21.⚙️ Which of these is an inclined plane? (a) a sloping road (b) a crane (c) a see-saw (d) a bottle opener
  22. 22.⚙️ Which of these is a lever? (a) a slide (b) a crane (c) a doorknob (d) a bottle opener
  23. 23.⚙️ Which of these is a lever? (a) a slide (b) a ramp (c) a crowbar (d) a well pulley
  24. 24.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) easier (c) harder (d) impossible
  25. 25.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
  26. 26.⚖️ 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
  27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the same cup of coins (b) the same string (c) how hard we must pull (d) number of pulleys
  28. 28.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
  29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is the one thing we change. (a) False (b) True
  30. 30.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) the same (c) zero (d) double
  31. 31.True or false: coins as the load is not needed for the thread-reel pulley. (a) True (b) False
  32. 32.⚙️ Which simple machine is a see-saw? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
  33. 33.True or false: a steering wheel uses a pulley. (a) True (b) False
  34. 34.True or false: a magnet is not needed for the thread-reel pulley. (a) True (b) False
  35. 35.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) string (c) a small paper cup (d) a battery cell
  36. 36.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
  37. 37.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) coins as the load (c) an empty thread reel (d) yeast
  38. 38.⚙️ Which of these is an inclined plane? (a) a slide (b) a doorknob (c) a see-saw (d) a flagpole
  39. 39.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
  40. 40.⚖️ 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) False (b) True

Answer key

  1. it can hurt your finger
  2. needed
  3. True
  4. not needed
  5. not needed
  6. it could fall on you
  7. a magnet
  8. an inclined plane
  9. turmeric powder
  10. down
  11. a pulley
  12. on the flagpole
  13. a balloon
  14. not needed
  15. a doorknob
  16. rope
  17. not needed
  18. True
  19. string
  20. a well pulley
  21. a sloping road
  22. a bottle opener
  23. a crowbar
  24. harder
  25. needed
  26. True
  27. number of pulleys
  28. True
  29. False
  30. about half
  31. False
  32. a lever
  33. False
  34. True
  35. a battery cell
  36. False
  37. yeast
  38. a slide
  39. needed
  40. False

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