Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 736 · 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 flagpole (b) a well pulley (c) a tap handle (d) a bottle opener
2. 2.🛟 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
3. 3.True or false: a mirror is not needed for the thread-reel pulley. (a) True (b) False
4. 4.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) number of pulleys (b) how hard we must pull (c) the same string
5. 5.⚙️ Which simple machine is a doorknob? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
6. 6.🧺 Which of these is needed for the thread-reel pulley? (a) coins as the load (b) a magnet (c) yeast (d) a mirror
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 keep it the same (b) we change it (c) we measure it
8. 8.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) turmeric powder (c) yeast (d) a small paper cup
9. 9.⚙️ Which of these uses a pulley? (a) a see-saw (b) a ramp (c) a well pulley (d) a steering wheel
10. 10.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
11. 11.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) an empty thread reel (c) a magnet (d) a small paper cup
12. 12.⚙️ Which simple machine is a ramp? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same cup of coins (b) how hard we must pull (c) the same string (d) the lifting height
14. 14.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
15. 15.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) changes pull direction (c) adds weight (d) makes it magnetic
16. 16.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a sloping road (c) a see-saw (d) a doorknob
17. 17.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) easier (d) impossible
18. 18.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
19. 19.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
20. 20.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
21. 21.⚙️ Which of these is a lever? (a) a see-saw (b) a doorknob (c) a ramp (d) a crane
22. 22.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) a small paper cup (c) coins as the load (d) a pencil
23. 23.⚙️ Which of these uses a pulley? (a) a ramp (b) a flagpole (c) a steering wheel (d) a tap handle
24. 24.True or false: a bottle opener uses a pulley. (a) True (b) False
25. 25.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
26. 26.⚖️ 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
27. 27.⚖️ 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
28. 28.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) in the tap (c) on the bench (d) on the blackboard
29. 29.⚖️ 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
30. 30.⚖️ 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
31. 31.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 40 cm (c) 20 cm (d) 5 cm
32. 32.True or false: a doorknob is a wheel and axle. (a) False (b) True
33. 33.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) yeast (c) string (d) a pencil
34. 34.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
35. 35.⚙️ Which of these uses a pulley? (a) a crowbar (b) a bottle opener (c) a crane (d) a see-saw
36. 36.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a small paper cup (c) string (d) a balloon
37. 37.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a balloon (c) an empty thread reel (d) a magnet
38. 38.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
39. 39.⚙️ Which of these is a lever? (a) a tap handle (b) a well pulley (c) a sloping road (d) a bottle opener
40. 40.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed

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