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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 401 · 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.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
  2. 2.⚙️ Which of these is a wheel and axle? (a) a doorknob (b) a see-saw (c) a ramp (d) a slide
  3. 3.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) sideways (c) down (d) up
  4. 4.True or false: a flagpole is an inclined plane. (a) False (b) True
  5. 5.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets wet (c) it turns blue (d) it gets longer
  6. 6.True or false: a ramp is an inclined plane. (a) True (b) False
  7. 7.True or false: a spoon lifting a lid is a lever. (a) True (b) False
  8. 8.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) harder (c) easier (d) the same
  9. 9.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
  10. 10.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
  11. 11.⚖️ 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
  12. 12.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we change it (c) we measure it
  13. 13.⚖️ 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) the same string (d) how hard we must pull
  14. 14.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
  15. 15.⚙️ Which of these is an inclined plane? (a) a doorknob (b) a tap handle (c) a see-saw (d) a slide
  16. 16.⚙️ Which of these is a lever? (a) a tap handle (b) a spoon lifting a lid (c) a steering wheel (d) a flagpole
  17. 17.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
  18. 18.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) a magnet (c) turmeric powder (d) yeast
  19. 19.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) True (b) False
  20. 20.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) on the blackboard (c) on the flagpole (d) in the tap
  21. 21.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same string (b) number of pulleys (c) how hard we must pull
  22. 22.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
  23. 23.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a small paper cup (c) a battery cell (d) coins as the load
  24. 24.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) the rope gets shorter (c) the bucket floats (d) pulling down is easier
  25. 25.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) a small paper cup (d) yeast
  26. 26.⚙️ Which simple machine is a crowbar? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
  27. 27.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) rope (c) battery (d) magnet
  28. 28.True or false: a crowbar is an inclined plane. (a) True (b) False
  29. 29.True or false: a bottle opener is an inclined plane. (a) True (b) False
  30. 30.⚙️ Which simple machine is a slide? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
  31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) yeast (c) a small paper cup (d) string
  32. 32.⚙️ Which simple machine is a ramp? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
  33. 33.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
  34. 34.True or false: a crane is a lever. (a) False (b) True
  35. 35.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
  36. 36.⚙️ Which of these is a wheel and axle? (a) a well pulley (b) a sloping road (c) a ramp (d) a steering wheel
  37. 37.🧺 Which of these is not needed for the thread-reel pulley? (a) a mirror (b) an empty thread reel (c) a small paper cup (d) coins as the load
  38. 38.True or false: string is needed for the thread-reel pulley. (a) False (b) True
  39. 39.True or false: a well pulley uses a pulley. (a) True (b) False
  40. 40.⚙️ Which of these is a lever? (a) a bottle opener (b) a ramp (c) a tap handle (d) a well pulley

Answer key

  1. a lever
  2. a doorknob
  3. down
  4. False
  5. it can hurt your finger
  6. True
  7. True
  8. harder
  9. needed
  10. a lever
  11. we measure it
  12. we change it
  13. number of pulleys
  14. needed
  15. a slide
  16. a spoon lifting a lid
  17. False
  18. a pencil
  19. False
  20. on the flagpole
  21. the same string
  22. not needed
  23. a battery cell
  24. pulling down is easier
  25. yeast
  26. a lever
  27. rope
  28. False
  29. False
  30. an inclined plane
  31. yeast
  32. an inclined plane
  33. needed
  34. False
  35. False
  36. a steering wheel
  37. a mirror
  38. True
  39. True
  40. a bottle opener

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