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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 637 · 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.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it gets wet (c) it turns blue (d) it can hurt your finger
  2. 2.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) yeast (d) a pencil
  3. 3.True or false: a sloping road is an inclined plane. (a) False (b) True
  4. 4.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
  5. 5.🧺 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
  6. 6.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it could fall on you (c) it might sing (d) it gets hot
  7. 7.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a battery cell (c) a small paper cup (d) a pencil
  8. 8.True or false: a battery cell is not needed for the thread-reel pulley. (a) False (b) True
  9. 9.True or false: a ramp is an inclined plane. (a) True (b) False
  10. 10.🧺 Do we need turmeric powder 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 the one thing we change. (a) True (b) False
  12. 12.True or false: a flagpole is a wheel and axle. (a) True (b) False
  13. 13.True or false: a ramp is a lever. (a) True (b) False
  14. 14.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) halves the weight (c) makes it magnetic (d) adds weight
  15. 15.⚙️ Which simple machine is a tap handle? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
  16. 16.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
  17. 17.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
  18. 18.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a balloon (c) string (d) coins as the load
  19. 19.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) turmeric powder (c) a small paper cup (d) yeast
  20. 20.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) string (c) turmeric powder (d) a mirror
  21. 21.True or false: a spoon lifting a lid is a lever. (a) True (b) False
  22. 22.⚖️ 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) number of pulleys (c) how hard we must pull (d) the same string
  23. 23.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
  24. 24.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) about half (c) zero (d) double
  25. 25.⚙️ Which of these uses a pulley? (a) a crane (b) a ramp (c) a spoon lifting a lid (d) a doorknob
  26. 26.True or false: a doorknob is an inclined plane. (a) False (b) True
  27. 27.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
  28. 28.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) down (c) up (d) in a circle
  29. 29.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
  30. 30.True or false: a tap handle is an inclined plane. (a) False (b) True
  31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) coins as the load (d) a magnet
  32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “how hard we must pull”? (a) we keep it the same (b) we change it (c) we measure it
  33. 33.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
  34. 34.⚙️ Which of these is a wheel and axle? (a) a steering wheel (b) a well pulley (c) a slide (d) a flagpole
  35. 35.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) string (d) a mirror
  36. 36.⚖️ 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
  37. 37.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) magnet (c) rope (d) nail
  38. 38.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
  39. 39.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a magnet (c) an empty thread reel (d) a pencil
  40. 40.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley

Answer key

  1. it can hurt your finger
  2. yeast
  3. True
  4. not needed
  5. turmeric powder
  6. it could fall on you
  7. a battery cell
  8. True
  9. True
  10. not needed
  11. False
  12. False
  13. False
  14. changes pull direction
  15. a wheel and axle
  16. needed
  17. False
  18. a balloon
  19. a small paper cup
  20. string
  21. True
  22. number of pulleys
  23. True
  24. about half
  25. a crane
  26. False
  27. False
  28. down
  29. needed
  30. False
  31. a magnet
  32. we measure it
  33. not needed
  34. a steering wheel
  35. a mirror
  36. True
  37. rope
  38. True
  39. a magnet
  40. a lever

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