Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 722 · 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 needed for the thread-reel pulley? (a) yeast (b) a mirror (c) turmeric powder (d) a pencil
2. 2.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a spoon lifting a lid (c) a flagpole (d) a sloping road
3. 3.⚙️ Which of these is an inclined plane? (a) a bottle opener (b) a see-saw (c) a steering wheel (d) a ramp
4. 4.⚙️ Which of these is a wheel and axle? (a) a doorknob (b) a well pulley (c) a bottle opener (d) a crane
5. 5.True or false: a ramp is an inclined plane. (a) False (b) True
6. 6.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
7. 7.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
8. 8.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
9. 9.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
10. 10.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
11. 11.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a balloon (c) a small paper cup (d) string
12. 12.🧺 Which of these is needed for the thread-reel pulley? (a) coins as the load (b) a battery cell (c) a mirror (d) turmeric powder
13. 13.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) double (c) the same (d) zero
14. 14.⚖️ 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
15. 15.⚙️ Which of these is a wheel and axle? (a) a slide (b) a ramp (c) a crane (d) a steering wheel
16. 16.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
17. 17.⚖️ 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
18. 18.True or false: string is needed for the thread-reel pulley. (a) True (b) False
19. 19.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) easier (c) harder (d) the same
20. 20.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets wet (c) it gets longer (d) it can hurt your finger
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 measure it (b) we change it (c) we keep it the same
22. 22.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a magnet (c) a small paper cup (d) yeast
23. 23.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it is magnetic (c) it might sing (d) it gets hot
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) an empty thread reel (c) a small paper cup (d) coins as the load
25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) False (b) True
26. 26.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the blackboard (c) in the tap (d) on the bench
27. 27.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
28. 28.⚙️ Which simple machine is a see-saw? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
29. 29.True or false: a spoon lifting a lid is a wheel and axle. (a) True (b) False
30. 30.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 5 cm (c) 20 cm (d) 40 cm
31. 31.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a steering wheel (c) a spoon lifting a lid (d) a slide
32. 32.🧺 Do we need coins as the load 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: the lifting height is the one thing we change. (a) False (b) True
34. 34.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) yeast (c) string (d) a pencil
35. 35.True or false: coins as the load is needed for the thread-reel pulley. (a) True (b) False
36. 36.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
37. 37.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
38. 38.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a mirror (c) yeast (d) string
39. 39.🧺 Which of these is not needed for the thread-reel pulley? (a) a mirror (b) a pencil (c) string (d) a small paper cup
40. 40.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False

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