Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 143 · 40 questions

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.

1. 1.⚙️ Which of these uses a pulley? (a) a tap handle (b) a sloping road (c) a flagpole (d) a steering wheel
2. 2.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
3. 3.⚖️ 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) True (b) False
4. 4.⚖️ 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 string (c) the lifting height (d) number of pulleys
5. 5.True or false: a spoon lifting a lid is a lever. (a) True (b) False
6. 6.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
7. 7.True or false: a see-saw is a lever. (a) True (b) False
8. 8.⚙️ Which simple machine is a crowbar? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we change it (b) we keep it the same (c) we measure it
10. 10.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) the same (c) double (d) zero
11. 11.⚙️ Which of these is a lever? (a) a tap handle (b) a slide (c) a flagpole (d) a see-saw
12. 12.⚙️ Which of these is a wheel and axle? (a) a slide (b) a sloping road (c) a crowbar (d) a tap handle
13. 13.⚙️ Which simple machine is a crane? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
14. 14.⚙️ Which of these is an inclined plane? (a) a bottle opener (b) a see-saw (c) a sloping road (d) a tap handle
15. 15.⚖️ 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
16. 16.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
18. 18.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a magnet (c) a pencil (d) coins as the load
19. 19.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a magnet (c) a mirror (d) string
20. 20.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a magnet (c) yeast (d) a pencil
21. 21.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we measure it (b) we keep it the same (c) we change it
22. 22.⚙️ Which simple machine is a well pulley? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
23. 23.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is the one thing we change. (a) True (b) False
24. 24.⚖️ 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
25. 25.⚙️ Which of these is a lever? (a) a crane (b) a tap handle (c) a ramp (d) a crowbar
26. 26.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same cup of coins”? (a) we change it (b) we measure it (c) we keep it the same
27. 27.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) a small paper cup (c) a pencil (d) an empty thread reel
28. 28.🧺 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 balloon
29. 29.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
30. 30.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
31. 31.True or false: a slide is a lever. (a) True (b) False
32. 32.⚖️ 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
33. 33.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a see-saw (c) a doorknob (d) a flagpole
34. 34.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the bench (c) on the flagpole (d) in the tap
35. 35.⚙️ Which of these uses a pulley? (a) a sloping road (b) a tap handle (c) a crane (d) a slide
36. 36.🧺 Which of these is needed for the thread-reel pulley? (a) an empty thread reel (b) a mirror (c) a magnet (d) a battery cell
37. 37.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) changes pull direction (c) makes it magnetic (d) adds weight
38. 38.🏗️ Why is a pulley used to lift water from a deep well? (a) pulling down is easier (b) the rope gets shorter (c) water gets lighter (d) the bucket floats
39. 39.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) a small paper cup (d) a balloon
40. 40.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a small paper cup (c) coins as the load (d) a mirror

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