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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 432 · 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.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) False (b) True
  2. 2.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
  3. 3.True or false: a steering wheel is a wheel and axle. (a) False (b) True
  4. 4.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same string (b) number of pulleys (c) how hard we must pull (d) the same cup of coins
  5. 5.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it might sing (c) it could fall on you (d) it gets hot
  6. 6.True or false: a well pulley is a lever. (a) False (b) True
  7. 7.True or false: a ramp is a lever. (a) True (b) False
  8. 8.⚖️ 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
  9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is kept the same. (a) False (b) True
  10. 10.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
  11. 11.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) coins as the load (d) a magnet
  12. 12.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets longer (c) it gets wet (d) it can hurt your finger
  13. 13.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) the bucket floats (c) pulling down is easier (d) water gets lighter
  14. 14.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
  15. 15.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
  16. 16.⚙️ Which simple machine is a slide? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
  17. 17.⚖️ 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
  18. 18.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
  19. 19.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
  20. 20.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) yeast (c) coins as the load (d) a balloon
  21. 21.True or false: a bottle opener is a lever. (a) True (b) False
  22. 22.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
  23. 23.⚖️ 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) False (b) True
  24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) an empty thread reel (c) a small paper cup (d) coins as the load
  25. 25.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) string (c) a magnet (d) a mirror
  26. 26.True or false: a bottle opener uses a pulley. (a) False (b) True
  27. 27.⚙️ Which of these uses a pulley? (a) a doorknob (b) a sloping road (c) a crane (d) a tap handle
  28. 28.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) halves the weight (c) adds weight (d) makes it magnetic
  29. 29.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
  30. 30.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a pencil (c) turmeric powder (d) a battery cell
  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) a small paper cup (b) yeast (c) a pencil (d) coins as the load
  33. 33.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
  34. 34.⚙️ Which simple machine is a sloping road? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
  35. 35.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
  36. 36.⚖️ 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) False (b) True
  37. 37.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
  38. 38.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) impossible (d) easier
  39. 39.True or false: a spoon lifting a lid is a wheel and axle. (a) True (b) False
  40. 40.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is what we measure. (a) True (b) False

Answer key

  1. False
  2. not needed
  3. True
  4. how hard we must pull
  5. it could fall on you
  6. False
  7. False
  8. False
  9. True
  10. a lever
  11. a magnet
  12. it can hurt your finger
  13. pulling down is easier
  14. True
  15. a lever
  16. an inclined plane
  17. False
  18. not needed
  19. False
  20. coins as the load
  21. True
  22. False
  23. True
  24. a balloon
  25. string
  26. False
  27. a crane
  28. changes pull direction
  29. a lever
  30. a pencil
  31. a pulley
  32. yeast
  33. not needed
  34. an inclined plane
  35. False
  36. False
  37. not needed
  38. harder
  39. False
  40. True

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