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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 280 · 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 kept the same. (a) False (b) True
  2. 2.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 5 cm (c) 10 cm (d) 20 cm
  3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) how hard we must pull (b) the same cup of coins (c) the lifting height (d) the same string
  4. 4.⚖️ 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) False (b) True
  5. 5.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we change it (b) we measure it (c) we keep it the same
  6. 6.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) in a circle (c) down (d) sideways
  7. 7.⚙️ Which simple machine is a spoon lifting a lid? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
  8. 8.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
  9. 9.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False
  10. 10.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it gets hot (c) it could fall on you (d) it is magnetic
  11. 11.🧺 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) a pencil
  12. 12.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
  13. 13.⚙️ Which simple machine is a tap handle? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
  14. 14.⚙️ Which simple machine is a flagpole? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
  15. 15.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
  16. 16.⚖️ 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) True (b) False
  17. 17.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
  18. 18.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
  19. 19.⚖️ 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
  20. 20.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a pencil (c) a balloon (d) a battery cell
  21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) yeast (d) an empty thread reel
  22. 22.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) coins as the load (c) a pencil (d) a mirror
  23. 23.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets longer (c) it turns blue (d) it gets wet
  24. 24.True or false: a slide uses a pulley. (a) True (b) False
  25. 25.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a small paper cup (c) string (d) a magnet
  26. 26.⚙️ Which of these uses a pulley? (a) a ramp (b) a crane (c) a crowbar (d) a bottle opener
  27. 27.⚙️ Which of these is a lever? (a) a spoon lifting a lid (b) a sloping road (c) a tap handle (d) a flagpole
  28. 28.True or false: coins as the load is needed for the thread-reel pulley. (a) True (b) False
  29. 29.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) double (c) the same (d) zero
  30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we keep it the same (b) we change it (c) we measure it
  31. 31.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
  32. 32.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
  33. 33.True or false: a bottle opener is a lever. (a) False (b) True
  34. 34.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) impossible (d) easier
  35. 35.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
  36. 36.True or false: string is needed for the thread-reel pulley. (a) False (b) True
  37. 37.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
  38. 38.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
  39. 39.True or false: a tap handle is an inclined plane. (a) False (b) True
  40. 40.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed

Answer key

  1. True
  2. 20 cm
  3. how hard we must pull
  4. True
  5. we keep it the same
  6. down
  7. a lever
  8. False
  9. False
  10. it could fall on you
  11. a balloon
  12. not needed
  13. a wheel and axle
  14. a pulley
  15. not needed
  16. True
  17. not needed
  18. needed
  19. True
  20. a pencil
  21. yeast
  22. a mirror
  23. it can hurt your finger
  24. False
  25. a magnet
  26. a crane
  27. a spoon lifting a lid
  28. True
  29. about half
  30. we keep it the same
  31. needed
  32. False
  33. True
  34. harder
  35. an inclined plane
  36. True
  37. needed
  38. False
  39. False
  40. needed

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