Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 595 · 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.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) False (b) True
2. 2.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
3. 3.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
4. 4.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) string (c) turmeric powder (d) a battery cell
5. 5.⚖️ 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) number of pulleys (d) the same cup of coins
6. 6.🧺 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) turmeric powder (d) string
7. 7.True or false: a doorknob is a lever. (a) True (b) False
8. 8.True or false: a spoon lifting a lid uses a pulley. (a) True (b) False
9. 9.⚖️ 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 same string (c) how hard we must pull
10. 10.⚙️ Which simple machine is a tap handle? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
11. 11.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
12. 12.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) an empty thread reel (c) a pencil (d) string
14. 14.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) about half (c) zero (d) double
15. 15.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we measure it (c) we keep it the same
16. 16.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) an empty thread reel (d) yeast
17. 17.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a crane (c) a ramp (d) a doorknob
18. 18.🧺 Which of these is not needed for the thread-reel pulley? (a) turmeric powder (b) a small paper cup (c) a pencil (d) coins as the load
19. 19.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the flagpole (c) on the blackboard (d) on the bench
20. 20.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a magnet (c) coins as the load (d) yeast
21. 21.True or false: string is needed for the thread-reel pulley. (a) True (b) False
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is the one thing we change. (a) False (b) True
23. 23.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
24. 24.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a small paper cup (c) string (d) a magnet
25. 25.True or false: coins as the load is needed for the thread-reel pulley. (a) False (b) True
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 keep it the same (b) we change it (c) we measure it
27. 27.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) an empty thread reel (c) a small paper cup (d) string
28. 28.⚖️ 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
29. 29.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
30. 30.⚖️ 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
31. 31.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a battery cell (c) an empty thread reel (d) a magnet
32. 32.⚙️ Which simple machine is a well pulley? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
33. 33.True or false: a bottle opener is a wheel and axle. (a) False (b) True
34. 34.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
35. 35.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) rope (c) nail (d) magnet
36. 36.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
37. 37.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it could fall on you (c) it is magnetic (d) it gets hot
38. 38.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
39. 39.True or false: a spoon lifting a lid is a lever. (a) True (b) False
40. 40.⚖️ 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) the lifting height (c) number of pulleys

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