Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 942 · 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.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) coins as the load (d) a battery cell
2. 2.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it is magnetic (c) it gets hot (d) it could fall on you
3. 3.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) in the tap (c) on the flagpole (d) on the bench
4. 4.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) coins as the load (c) yeast (d) a battery cell
5. 5.⚙️ Which simple machine is a ramp? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
6. 6.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) how hard we must pull (b) number of pulleys (c) the lifting height (d) the same string
7. 7.True or false: a crane is an inclined plane. (a) False (b) True
8. 8.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is kept the same. (a) False (b) True
10. 10.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
11. 11.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) an empty thread reel (d) a magnet
13. 13.⚖️ 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
14. 14.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
15. 15.🧺 Which of these is not needed for the thread-reel pulley? (a) a mirror (b) coins as the load (c) an empty thread reel (d) string
16. 16.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
17. 17.True or false: a spoon lifting a lid is a lever. (a) True (b) False
18. 18.⚙️ Which simple machine is a crane? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
19. 19.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it gets wet (c) it turns blue (d) it can hurt your finger
20. 20.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) an empty thread reel (c) turmeric powder (d) a mirror
21. 21.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
22. 22.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
23. 23.⚖️ 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) True (b) False
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) a magnet (c) a mirror (d) turmeric powder
25. 25.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
26. 26.True or false: string is needed for the thread-reel pulley. (a) True (b) False
27. 27.⚙️ Which simple machine is a crowbar? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
28. 28.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
29. 29.⚖️ 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
30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the lifting height (b) the same cup of coins (c) how hard we must pull (d) number of pulleys
31. 31.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) zero (c) the same (d) about half
33. 33.⚙️ Which simple machine is a see-saw? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
34. 34.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a mirror (c) a balloon (d) string
35. 35.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) magnet (c) rope (d) battery
36. 36.⚖️ 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 change it (c) we keep it the same
37. 37.⚙️ Which of these uses a pulley? (a) a sloping road (b) a see-saw (c) a ramp (d) a crane
38. 38.⚙️ Which of these is a lever? (a) a crane (b) a steering wheel (c) a slide (d) a spoon lifting a lid
39. 39.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) a balloon (d) coins as the load
40. 40.⚖️ 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

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