Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 95 · 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.🇮🇳 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
2. 2.⚖️ 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 keep it the same (b) we measure it (c) we change it
3. 3.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
4. 4.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) how hard we must pull (b) the lifting height (c) number of pulleys
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) a small paper cup (d) a magnet
6. 6.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
7. 7.True or false: a well pulley is an inclined plane. (a) False (b) True
8. 8.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) changes pull direction (c) makes it magnetic (d) adds weight
9. 9.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
10. 10.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) easier (c) harder (d) impossible
11. 11.⚖️ 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) the same string (c) how hard we must pull
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) string (c) an empty thread reel (d) a pencil
13. 13.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a balloon (c) string (d) a pencil
14. 14.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) coins as the load (c) a small paper cup (d) a mirror
15. 15.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it gets hot (c) it could fall on you (d) it might sing
16. 16.⚙️ Which simple machine is a flagpole? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
17. 17.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
18. 18.⚙️ Which of these is a lever? (a) a sloping road (b) a crane (c) a steering wheel (d) a see-saw
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) coins as the load (d) a mirror
20. 20.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets longer (c) it gets wet (d) it can hurt your finger
21. 21.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
22. 22.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
23. 23.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a balloon (c) an empty thread reel (d) a mirror
24. 24.⚖️ 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
25. 25.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
26. 26.⚙️ Which of these is a wheel and axle? (a) a slide (b) a ramp (c) a bottle opener (d) a doorknob
27. 27.True or false: a steering wheel uses a pulley. (a) False (b) True
28. 28.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a spoon lifting a lid (c) a ramp (d) a well pulley
29. 29.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) turmeric powder (c) yeast (d) string
30. 30.True or false: a flagpole uses a pulley. (a) False (b) True
31. 31.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) down (c) up (d) in a circle
32. 32.🧺 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 pencil (d) coins as the load
33. 33.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
34. 34.True or false: coins as the load is not needed for the thread-reel pulley. (a) True (b) False
35. 35.⚙️ Which of these is a wheel and axle? (a) a ramp (b) a sloping road (c) a steering wheel (d) a crane
36. 36.🧺 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 small paper cup
37. 37.⚙️ Which simple machine is a ramp? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
38. 38.⚖️ 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
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 cup of coins (b) the same string (c) how hard we must pull (d) the lifting height
40. 40.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed

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