Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 555 · 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.⚖️ 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 change it (b) we keep it the same (c) we measure it
2. 2.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a bottle opener (c) a steering wheel (d) a ramp
3. 3.⚙️ Which of these is a wheel and axle? (a) a ramp (b) a crowbar (c) a slide (d) a tap handle
4. 4.🏗️ Why is a pulley used to lift water from a deep well? (a) pulling down is easier (b) the bucket floats (c) the rope gets shorter (d) water gets lighter
5. 5.⚙️ Which of these is an inclined plane? (a) a bottle opener (b) a crane (c) a steering wheel (d) a sloping road
6. 6.⚙️ Which simple machine is a crowbar? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
7. 7.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 5 cm (c) 20 cm (d) 10 cm
8. 8.True or false: a crowbar is a wheel and axle. (a) True (b) False
9. 9.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
10. 10.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
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) how hard we must pull (c) the lifting height (d) the same string
12. 12.🧺 Which of these is not needed for the thread-reel pulley? (a) a balloon (b) a small paper cup (c) coins as the load (d) string
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is the one thing we change. (a) False (b) True
14. 14.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
15. 15.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
16. 16.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
17. 17.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
18. 18.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) halves the weight (c) makes it magnetic (d) changes pull direction
19. 19.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a magnet (c) a balloon (d) string
20. 20.⚙️ Which simple machine is a steering wheel? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
21. 21.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it is magnetic (c) it could fall on you (d) it might sing
22. 22.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) coins as the load (c) string (d) yeast
23. 23.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) a small paper cup (c) a battery cell (d) string
24. 24.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we keep it the same (c) we change it
25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the lifting height (b) number of pulleys (c) the same string (d) the same cup of coins
26. 26.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the bench (c) in the tap (d) on the flagpole
27. 27.True or false: a well pulley uses a pulley. (a) True (b) False
28. 28.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is what we measure. (a) True (b) False
30. 30.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
31. 31.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) easier (c) the same (d) harder
32. 32.True or false: a spoon lifting a lid is a lever. (a) False (b) True
33. 33.True or false: a spoon lifting a lid uses a pulley. (a) False (b) True
34. 34.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) string (c) a pencil (d) coins as the load
35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same string (b) number of pulleys (c) how hard we must pull
36. 36.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) battery (c) magnet (d) nail
37. 37.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) about half (c) the same (d) zero
38. 38.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a bottle opener (c) a crane (d) a crowbar
39. 39.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a mirror (c) a small paper cup (d) string
40. 40.⚙️ Which simple machine is a doorknob? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley

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