Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 163 · 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) turmeric powder (c) a mirror (d) coins as the load
2. 2.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) coins as the load (c) a small paper cup (d) string
3. 3.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
4. 4.⚙️ Which simple machine is a spoon lifting a lid? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a magnet (c) string (d) coins as the load
6. 6.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) number of pulleys (b) the same string (c) the same cup of coins (d) how hard we must pull
8. 8.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) turmeric powder (c) coins as the load (d) string
9. 9.⚖️ 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
10. 10.True or false: a mirror is not needed for the thread-reel pulley. (a) True (b) False
11. 11.🧺 Which of these is not needed for the thread-reel pulley? (a) turmeric powder (b) a small paper cup (c) a pencil (d) an empty thread reel
12. 12.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
13. 13.🛟 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
14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) True (b) False
15. 15.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a spoon lifting a lid (c) a steering wheel (d) a flagpole
16. 16.⚖️ 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 change it (c) we measure it
17. 17.⚙️ Which of these uses a pulley? (a) a ramp (b) a steering wheel (c) a crane (d) a slide
18. 18.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 20 cm (c) 40 cm (d) 10 cm
19. 19.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) water gets lighter (c) the rope gets shorter (d) pulling down is easier
20. 20.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a small paper cup (c) a balloon (d) a mirror
21. 21.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
22. 22.⚙️ Which simple machine is a see-saw? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
23. 23.⚖️ 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) False (b) True
24. 24.🧺 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) coins as the load (d) a balloon
25. 25.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False
26. 26.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the bench (c) on the blackboard (d) in the tap
27. 27.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
28. 28.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) impossible (c) easier (d) the same
29. 29.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it could fall on you (c) it might sing (d) it is magnetic
30. 30.⚖️ 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) number of pulleys (c) the lifting height (d) how hard we must pull
31. 31.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a mirror (c) string (d) coins as the load
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) False (b) True
33. 33.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
34. 34.⚙️ Which of these is a wheel and axle? (a) a sloping road (b) a doorknob (c) a crowbar (d) a ramp
35. 35.⚖️ 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
36. 36.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
37. 37.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a battery cell (c) an empty thread reel (d) yeast
38. 38.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a pencil (c) yeast (d) a mirror
39. 39.⚙️ Which of these uses a pulley? (a) a flagpole (b) a doorknob (c) a sloping road (d) a see-saw
40. 40.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) False (b) True

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