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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 278 · 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 same cup of coins is kept the same. (a) True (b) False
  2. 2.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) number of pulleys (b) how hard we must pull (c) the same string
  3. 3.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) pulling down is easier (c) water gets lighter (d) the rope gets shorter
  4. 4.⚙️ Which of these is a lever? (a) a crowbar (b) a well pulley (c) a doorknob (d) a tap handle
  5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) a small paper cup (c) string (d) an empty thread reel
  6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) turmeric powder (c) a small paper cup (d) an empty thread reel
  7. 7.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) turmeric powder (c) a small paper cup (d) a magnet
  8. 8.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a magnet (c) coins as the load (d) turmeric powder
  9. 9.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it could fall on you (c) it is magnetic (d) it might sing
  10. 10.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
  11. 11.⚖️ 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
  12. 12.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
  13. 13.True or false: a magnet is not needed for the thread-reel pulley. (a) True (b) False
  14. 14.⚙️ Which simple machine is a tap handle? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
  15. 15.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) battery (c) rope (d) magnet
  16. 16.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
  17. 17.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
  18. 18.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
  19. 19.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
  20. 20.🔮 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
  21. 21.🧺 Which of these is not needed for the thread-reel pulley? (a) a battery cell (b) a small paper cup (c) a pencil (d) an empty thread reel
  22. 22.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
  23. 23.⚙️ Which simple machine is a crane? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
  24. 24.True or false: a tap handle is a wheel and axle. (a) True (b) False
  25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) True (b) False
  26. 26.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it turns blue (c) it gets wet (d) it can hurt your finger
  27. 27.⚙️ Which of these is a lever? (a) a steering wheel (b) a spoon lifting a lid (c) a tap handle (d) a sloping road
  28. 28.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
  29. 29.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
  30. 30.True or false: a spoon lifting a lid uses a pulley. (a) False (b) True
  31. 31.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
  32. 32.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
  33. 33.⚖️ 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 string (b) how hard we must pull (c) the lifting height (d) number of pulleys
  34. 34.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) down (b) in a circle (c) sideways (d) up
  35. 35.True or false: a battery cell is needed for the thread-reel pulley. (a) False (b) True
  36. 36.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True
  37. 37.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
  38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a small paper cup (c) a balloon (d) coins as the load
  39. 39.True or false: a spoon lifting a lid is a lever. (a) False (b) True
  40. 40.⚙️ Which of these is an inclined plane? (a) a sloping road (b) a doorknob (c) a well pulley (d) a steering wheel

Answer key

  1. True
  2. the same string
  3. pulling down is easier
  4. a crowbar
  5. a magnet
  6. turmeric powder
  7. a small paper cup
  8. coins as the load
  9. it could fall on you
  10. needed
  11. True
  12. not needed
  13. True
  14. a wheel and axle
  15. rope
  16. needed
  17. needed
  18. True
  19. a wheel and axle
  20. 20 cm
  21. a battery cell
  22. False
  23. a pulley
  24. True
  25. True
  26. it can hurt your finger
  27. a spoon lifting a lid
  28. False
  29. not needed
  30. False
  31. True
  32. a lever
  33. number of pulleys
  34. down
  35. False
  36. False
  37. not needed
  38. a balloon
  39. True
  40. a sloping road

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