Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 303 · 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? What do we do with “how hard we must pull”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a small paper cup (c) a magnet (d) a balloon
3. 3.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
4. 4.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a ramp (c) a bottle opener (d) a crane
5. 5.🧺 Which of these is not needed for the thread-reel pulley? (a) a balloon (b) an empty thread reel (c) a small paper cup (d) coins as the load
6. 6.⚙️ Which simple machine is a crane? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
7. 7.True or false: a tap handle uses a pulley. (a) True (b) False
8. 8.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
9. 9.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets longer (c) it can hurt your finger (d) it gets wet
10. 10.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
11. 11.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) a small paper cup (d) yeast
13. 13.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
14. 14.⚙️ Which of these is a lever? (a) a spoon lifting a lid (b) a tap handle (c) a sloping road (d) a well pulley
15. 15.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
16. 16.True or false: a steering wheel is an inclined plane. (a) True (b) False
17. 17.⚙️ Which simple machine is a sloping road? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
18. 18.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) the same (c) zero (d) about half
19. 19.True or false: a steering wheel is a lever. (a) False (b) True
20. 20.⚙️ Which simple machine is a bottle opener? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
21. 21.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
22. 22.🧺 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) a battery cell (d) a pencil
23. 23.⚖️ 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
24. 24.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same cup of coins (b) how hard we must pull (c) number of pulleys
25. 25.True or false: a spoon lifting a lid is an inclined plane. (a) False (b) True
26. 26.🇮🇳 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
27. 27.True or false: string is needed for the thread-reel pulley. (a) True (b) False
28. 28.⚖️ 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 measure it (c) we change it
29. 29.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a bottle opener (c) a spoon lifting a lid (d) a sloping road
30. 30.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a mirror (c) a magnet (d) an empty thread reel
31. 31.True or false: a tap handle is a lever. (a) True (b) False
32. 32.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) coins as the load (c) string (d) a mirror
33. 33.⚖️ 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 change it (c) we keep it the same
34. 34.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
35. 35.True or false: yeast is not needed for the thread-reel pulley. (a) False (b) True
36. 36.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it is magnetic (c) it gets hot (d) it might sing
37. 37.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) turmeric powder (c) a balloon (d) coins as the load
38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) string (c) a balloon (d) an empty thread reel
39. 39.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a battery cell (c) a pencil (d) yeast
40. 40.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed

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