Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 544 · 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.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) rope (c) magnet (d) nail
2. 2.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
3. 3.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
4. 4.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a tap handle (c) a bottle opener (d) a flagpole
5. 5.⚙️ Which of these is a lever? (a) a crane (b) a doorknob (c) a tap handle (d) a see-saw
6. 6.⚙️ Which simple machine is a well pulley? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
7. 7.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) turmeric powder (d) a small paper cup
8. 8.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
9. 9.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) yeast (c) a small paper cup (d) a pencil
10. 10.⚙️ Which simple machine is a ramp? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
11. 11.⚖️ 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 lifting height (c) the same string (d) how hard we must pull
12. 12.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 20 cm (c) 5 cm (d) 10 cm
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a battery cell (c) a small paper cup (d) string
14. 14.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
15. 15.⚖️ 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 change it (b) we measure it (c) we keep it the same
16. 16.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) an empty thread reel (c) a small paper cup (d) yeast
17. 17.⚙️ Which of these is an inclined plane? (a) a crane (b) a spoon lifting a lid (c) a doorknob (d) a ramp
18. 18.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
19. 19.True or false: a steering wheel uses a pulley. (a) True (b) False
20. 20.🧺 Which of these is needed for the thread-reel pulley? (a) coins as the load (b) a mirror (c) turmeric powder (d) a magnet
21. 21.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) the same (c) harder (d) impossible
22. 22.⚖️ 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) True (b) False
23. 23.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a small paper cup (c) a pencil (d) a balloon
24. 24.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it can hurt your finger (d) it turns blue
25. 25.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
26. 26.⚙️ Which simple machine is a doorknob? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
27. 27.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a crowbar (c) a doorknob (d) a slide
28. 28.🧺 Which of these is needed for the thread-reel pulley? (a) an empty thread reel (b) a mirror (c) a balloon (d) a magnet
29. 29.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) turmeric powder (c) string (d) coins as the load
30. 30.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
31. 31.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
32. 32.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the flagpole (c) on the bench (d) on the blackboard
33. 33.⚖️ 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
34. 34.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) changes pull direction (c) adds weight (d) makes it magnetic
35. 35.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) string (c) a small paper cup (d) a mirror
36. 36.⚙️ Which simple machine is a tap handle? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
37. 37.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
38. 38.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
39. 39.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
40. 40.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True

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