Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 431 · 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 a wheel and axle? (a) a crane (b) a bottle opener (c) a crowbar (d) a tap handle
2. 2.⚖️ 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 string (b) how hard we must pull (c) number of pulleys (d) the same cup of coins
3. 3.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
4. 4.⚖️ 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 change it (c) we keep it the same
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) a pencil (c) a small paper cup (d) string
6. 6.🧺 Which of these is needed for the thread-reel pulley? (a) a small paper cup (b) a balloon (c) turmeric powder (d) a mirror
7. 7.⚖️ 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) the same string (d) how hard we must pull
8. 8.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) coins as the load (c) string (d) an empty thread reel
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) True (b) False
10. 10.🧺 Which of these is not needed for the thread-reel pulley? (a) turmeric powder (b) a pencil (c) an empty thread reel (d) string
11. 11.True or false: a doorknob is a wheel and axle. (a) True (b) False
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) turmeric powder (c) a pencil (d) an empty thread reel
13. 13.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) up (c) in a circle (d) down
14. 14.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) string (c) a small paper cup (d) yeast
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.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) adds weight (c) changes pull direction (d) halves the weight
17. 17.⚙️ Which simple machine is a tap handle? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
18. 18.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) nail (c) magnet (d) rope
19. 19.🧺 Which of these is needed for the thread-reel pulley? (a) string (b) yeast (c) a mirror (d) a magnet
20. 20.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the bench (c) on the flagpole (d) on the blackboard
21. 21.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
22. 22.⚖️ 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
23. 23.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
24. 24.⚙️ Which simple machine is a see-saw? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) True (b) False
26. 26.⚙️ Which simple machine is a crane? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
27. 27.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) easier (c) impossible (d) harder
28. 28.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) an empty thread reel (c) coins as the load (d) a magnet
29. 29.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) the same (c) double (d) about half
30. 30.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a magnet (c) yeast (d) coins as the load
31. 31.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a battery cell (c) a balloon (d) a pencil
32. 32.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
33. 33.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
34. 34.⚙️ Which simple machine is a sloping road? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
35. 35.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
36. 36.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) how hard we must pull (b) number of pulleys (c) the lifting height
37. 37.True or false: a bottle opener is a wheel and axle. (a) False (b) True
38. 38.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) how hard we must pull (b) number of pulleys (c) the same cup of coins
39. 39.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) a pencil (c) an empty thread reel (d) string
40. 40.⚖️ 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

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