Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 62 · 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.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) down (c) in a circle (d) up
2. 2.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
3. 3.⚖️ 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
4. 4.⚖️ 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
5. 5.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) halves the weight (c) changes pull direction (d) makes it magnetic
6. 6.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
7. 7.True or false: a crane uses a pulley. (a) False (b) True
8. 8.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
9. 9.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it might sing (c) it could fall on you (d) it gets hot
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a small paper cup (c) an empty thread reel (d) turmeric powder
11. 11.True or false: a crane is a lever. (a) True (b) False
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a battery cell (c) an empty thread reel (d) coins as the load
13. 13.⚙️ Which of these uses a pulley? (a) a tap handle (b) a sloping road (c) a flagpole (d) a doorknob
14. 14.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the blackboard (c) on the bench (d) on the flagpole
15. 15.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a small paper cup (c) a magnet (d) an empty thread reel
16. 16.True or false: coins as the load is needed for the thread-reel pulley. (a) True (b) False
17. 17.⚙️ Which of these is a lever? (a) a steering wheel (b) a ramp (c) a sloping road (d) a bottle opener
18. 18.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
19. 19.🧺 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
20. 20.⚙️ Which simple machine is a flagpole? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
21. 21.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) turmeric powder (c) a mirror (d) string
22. 22.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) impossible (c) the same (d) easier
23. 23.⚖️ 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
24. 24.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
25. 25.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a magnet (c) coins as the load (d) turmeric powder
26. 26.True or false: a battery cell is not needed for the thread-reel pulley. (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 same cup of coins”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.⚙️ Which of these is an inclined plane? (a) a bottle opener (b) a sloping road (c) a spoon lifting a lid (d) a see-saw
29. 29.⚖️ 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
30. 30.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) the same (c) double (d) about half
31. 31.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
32. 32.⚙️ Which of these uses a pulley? (a) a slide (b) a doorknob (c) a crowbar (d) a well pulley
33. 33.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
34. 34.⚖️ 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
35. 35.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a pencil (c) a mirror (d) a magnet
36. 36.True or false: a slide is a wheel and axle. (a) False (b) True
37. 37.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
38. 38.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
39. 39.⚙️ Which simple machine is a slide? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
40. 40.⚖️ 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 change it (c) we keep it the same

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