Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 110 · 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 an inclined plane? (a) a bottle opener (b) a well pulley (c) a crane (d) a sloping road
2. 2.🧺 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) a battery cell (d) a pencil
3. 3.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) coins as the load (c) a small paper cup (d) a battery cell
4. 4.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
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 lifting height (b) number of pulleys (c) the same string (d) how hard we must pull
6. 6.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a magnet (c) a balloon (d) an empty thread reel
7. 7.True or false: a sloping road is an inclined plane. (a) False (b) True
8. 8.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) easier (c) impossible (d) harder
9. 9.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) nail (c) rope (d) magnet
10. 10.⚖️ 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
11. 11.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it gets hot (c) it might sing (d) it is magnetic
12. 12.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it can hurt your finger (c) it gets longer (d) it gets wet
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) yeast (d) a small paper cup
14. 14.⚖️ 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 change it (b) we keep it the same (c) we measure it
15. 15.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we measure it (c) we change it
16. 16.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
17. 17.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
18. 18.🧺 Which of these is needed for the thread-reel pulley? (a) a small paper cup (b) a battery cell (c) a balloon (d) a magnet
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a small paper cup (c) turmeric powder (d) string
20. 20.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
21. 21.⚖️ 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 change it (c) we measure it
22. 22.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
23. 23.⚖️ 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 lifting height (d) the same string
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a balloon (c) a pencil (d) an empty thread reel
25. 25.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
26. 26.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) an empty thread reel (c) string (d) coins as the load
27. 27.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the bench (c) on the blackboard (d) on the flagpole
28. 28.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
29. 29.True or false: a crane uses a pulley. (a) True (b) False
30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) the rope gets shorter (c) water gets lighter (d) pulling down is easier
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is the one thing we change. (a) True (b) False
33. 33.⚖️ 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
34. 34.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
35. 35.⚙️ Which of these is a wheel and axle? (a) a bottle opener (b) a see-saw (c) a well pulley (d) a steering wheel
36. 36.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a mirror (c) coins as the load (d) string
37. 37.⚙️ Which simple machine is a see-saw? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
38. 38.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
39. 39.True or false: a bottle opener is a lever. (a) False (b) True
40. 40.⚙️ Which simple machine is a ramp? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley

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