Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 46 · 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 is needed for the thread-reel pulley? (a) a magnet (b) a mirror (c) a balloon (d) string
2. 2.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
3. 3.⚖️ 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
4. 4.True or false: a bottle opener is an inclined plane. (a) True (b) False
5. 5.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
6. 6.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a mirror (c) a pencil (d) turmeric powder
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is the one thing we change. (a) False (b) True
8. 8.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) double (c) about half (d) the same
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) False (b) True
10. 10.⚙️ Which of these is a lever? (a) a see-saw (b) a well pulley (c) a steering wheel (d) a flagpole
11. 11.⚖️ 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) the lifting height (c) the same string (d) number of pulleys
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) a pencil (d) a balloon
13. 13.⚙️ Which of these is a lever? (a) a slide (b) a tap handle (c) a bottle opener (d) a flagpole
14. 14.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it gets hot (c) it is magnetic (d) it could fall on you
15. 15.True or false: a sloping road is a lever. (a) True (b) False
16. 16.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
17. 17.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
18. 18.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
19. 19.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
20. 20.🧺 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) yeast
21. 21.⚖️ 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) the lifting height (c) how hard we must pull
22. 22.⚖️ 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 measure it (b) we keep it the same (c) we change it
23. 23.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
24. 24.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is kept the same. (a) True (b) False
25. 25.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
26. 26.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.⚙️ Which simple machine is a see-saw? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
28. 28.⚖️ 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
29. 29.True or false: a ramp is a lever. (a) False (b) True
30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) how hard we must pull (b) number of pulleys (c) the same cup of coins
31. 31.True or false: a steering wheel is a wheel and axle. (a) True (b) False
32. 32.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the bench (c) in the tap (d) on the blackboard
33. 33.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.⚖️ 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
35. 35.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a see-saw (c) a doorknob (d) a sloping road
36. 36.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
37. 37.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) an empty thread reel (c) string (d) a mirror
38. 38.⚙️ Which of these is a lever? (a) a crowbar (b) a slide (c) a ramp (d) a tap handle
39. 39.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) coins as the load (c) a pencil (d) a small paper cup

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