Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 510 · 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 not needed for the thread-reel pulley? (a) a pencil (b) an empty thread reel (c) turmeric powder (d) string
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) how hard we must pull (b) the same string (c) the same cup of coins (d) number of pulleys
3. 3.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
4. 4.True or false: a sloping road is an inclined plane. (a) False (b) True
5. 5.⚙️ Which of these uses a pulley? (a) a spoon lifting a lid (b) a well pulley (c) a bottle opener (d) a ramp
6. 6.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a balloon (c) a small paper cup (d) a battery cell
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.True or false: a steering wheel is a lever. (a) False (b) True
9. 9.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
10. 10.⚖️ 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
11. 11.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is what we measure. (a) False (b) True
12. 12.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
13. 13.⚙️ Which simple machine is a tap handle? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
14. 14.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) turmeric powder (c) string (d) a pencil
15. 15.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it turns blue (c) it can hurt your finger (d) it gets longer
16. 16.⚙️ Which of these is a lever? (a) a see-saw (b) a ramp (c) a sloping road (d) a slide
17. 17.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
18. 18.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) about half (c) double (d) the same
19. 19.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a battery cell (c) string (d) yeast
20. 20.⚖️ 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) True (b) False
21. 21.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
22. 22.🇮🇳 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
23. 23.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it could fall on you (c) it gets hot (d) it might sing
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) yeast (c) a magnet (d) coins as the load
25. 25.⚙️ Which simple machine is a slide? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
26. 26.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
27. 27.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) a mirror (c) a battery cell (d) a magnet
28. 28.⚖️ 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 keep it the same (b) we measure it (c) we change it
29. 29.⚖️ 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 cup of coins (c) how hard we must pull (d) the same string
30. 30.True or false: a well pulley is a wheel and axle. (a) False (b) True
31. 31.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same string (b) how hard we must pull (c) number of pulleys
32. 32.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
33. 33.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is the one thing we change. (a) False (b) True
34. 34.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we measure it (c) we keep it the same
35. 35.True or false: a crowbar is an inclined plane. (a) True (b) False
36. 36.True or false: a ramp is a lever. (a) True (b) False
37. 37.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) string (c) a magnet (d) an empty thread reel
38. 38.⚙️ Which of these is a wheel and axle? (a) a doorknob (b) a flagpole (c) a bottle opener (d) a well pulley
39. 39.🧺 Which of these is not needed for the thread-reel pulley? (a) a battery cell (b) an empty thread reel (c) a pencil (d) a small paper cup
40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) string (c) a pencil (d) a small paper cup

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