Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 558 · 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.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
2. 2.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a battery cell (c) a pencil (d) coins as the load
3. 3.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
4. 4.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) yeast (d) an empty thread reel
5. 5.⚙️ Which of these is an inclined plane? (a) a sloping road (b) a see-saw (c) a crane (d) a crowbar
6. 6.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) pulling down is easier (c) water gets lighter (d) the bucket floats
7. 7.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
8. 8.⚖️ 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
9. 9.🧺 Which of these is needed for the thread-reel pulley? (a) coins as the load (b) a battery cell (c) a magnet (d) a balloon
10. 10.⚖️ 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
11. 11.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) an empty thread reel (c) a pencil (d) string
12. 12.⚙️ Which of these uses a pulley? (a) a doorknob (b) a steering wheel (c) a sloping road (d) a crane
13. 13.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
14. 14.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) about half (c) the same (d) zero
15. 15.⚖️ 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
16. 16.🧺 Which of these is not needed for the thread-reel pulley? (a) turmeric powder (b) coins as the load (c) an empty thread reel (d) a pencil
17. 17.⚖️ 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) how hard we must pull (c) the same string (d) the same cup of coins
18. 18.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) coins as the load (d) yeast
19. 19.⚙️ Which simple machine is a flagpole? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
20. 20.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a crane (c) a ramp (d) a see-saw
21. 21.⚖️ 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
22. 22.⚙️ Which of these is a lever? (a) a well pulley (b) a flagpole (c) a see-saw (d) a crane
23. 23.True or false: a slide is a lever. (a) True (b) False
24. 24.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
25. 25.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
26. 26.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
27. 27.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
28. 28.🧺 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 small paper cup (d) a pencil
29. 29.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
30. 30.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
31. 31.True or false: a steering wheel is a wheel and axle. (a) False (b) True
32. 32.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it is magnetic (c) it could fall on you (d) it might sing
33. 33.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) on the blackboard (c) in the tap (d) on the flagpole
34. 34.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) adds weight (c) halves the weight (d) makes it magnetic
35. 35.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) easier (c) impossible (d) harder
36. 36.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) a magnet (d) a small paper cup
37. 37.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a battery cell (c) a small paper cup (d) a pencil
39. 39.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same string (b) number of pulleys (c) how hard we must pull (d) the same cup of coins
40. 40.⚙️ Which simple machine is a steering wheel? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever

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