Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 467 · 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.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it could fall on you (c) it might sing (d) it gets hot
2. 2.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a doorknob (c) a ramp (d) a crane
3. 3.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) yeast (c) turmeric powder (d) a magnet
4. 4.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 40 cm (c) 10 cm (d) 5 cm
5. 5.⚙️ Which simple machine is a spoon lifting a lid? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
6. 6.⚙️ Which of these uses a pulley? (a) a crowbar (b) a ramp (c) a flagpole (d) a spoon lifting a lid
7. 7.⚖️ 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) number of pulleys (c) the same string (d) the lifting height
8. 8.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) the same (c) impossible (d) easier
9. 9.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) string (d) a balloon
11. 11.⚖️ 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
12. 12.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
13. 13.True or false: a see-saw is an inclined plane. (a) True (b) False
14. 14.⚖️ 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
15. 15.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it gets wet (c) it can hurt your finger (d) it turns blue
16. 16.True or false: a magnet is not needed for the thread-reel pulley. (a) True (b) False
17. 17.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
18. 18.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
19. 19.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
20. 20.True or false: a steering wheel is a wheel and axle. (a) True (b) False
21. 21.🧺 Which of these is needed for the thread-reel pulley? (a) an empty thread reel (b) yeast (c) a magnet (d) a battery cell
22. 22.True or false: yeast is not needed for the thread-reel pulley. (a) False (b) True
23. 23.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) about half (c) zero (d) double
24. 24.⚙️ Which of these is an inclined plane? (a) a sloping road (b) a see-saw (c) a spoon lifting a lid (d) a bottle opener
25. 25.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) a small paper cup (d) a mirror
26. 26.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a magnet (c) an empty thread reel (d) a pencil
27. 27.🇮🇳 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
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.True or false: a crowbar uses a pulley. (a) True (b) False
30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) turmeric powder (c) a pencil (d) coins as the load
31. 31.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
32. 32.True or false: a slide is a wheel and axle. (a) False (b) True
33. 33.⚙️ Which simple machine is a ramp? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
34. 34.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
35. 35.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) the rope gets shorter (c) pulling down is easier (d) water gets lighter
36. 36.⚖️ 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
37. 37.⚙️ Which of these uses a pulley? (a) a slide (b) a crane (c) a see-saw (d) a doorknob
38. 38.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
39. 39.⚙️ Which simple machine is a see-saw? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
40. 40.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) number of pulleys (b) the lifting height (c) the same string (d) the same cup of coins

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