Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 652 · 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.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
2. 2.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it can hurt your finger (c) it gets wet (d) it turns blue
3. 3.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it is magnetic (c) it gets hot (d) it could fall on you
4. 4.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a pencil (c) yeast (d) turmeric powder
5. 5.⚖️ 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
6. 6.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
7. 7.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) halves the weight (c) makes it magnetic (d) changes pull direction
8. 8.⚙️ Which of these is a lever? (a) a crane (b) a bottle opener (c) a well pulley (d) a ramp
9. 9.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
10. 10.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
11. 11.⚖️ 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
12. 12.⚙️ Which simple machine is a steering wheel? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
13. 13.⚖️ 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 keep it the same (c) we measure it
14. 14.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) yeast (c) a pencil (d) string
15. 15.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
16. 16.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the lifting height (b) the same cup of coins (c) how hard we must pull (d) the same string
17. 17.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
18. 18.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) a small paper cup (c) coins as the load (d) a pencil
19. 19.True or false: a battery cell is needed for the thread-reel pulley. (a) False (b) True
20. 20.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
21. 21.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) in a circle (c) up (d) down
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the same cup of coins (b) the lifting height (c) number of pulleys (d) the same string
23. 23.⚙️ Which simple machine is a ramp? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
24. 24.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
25. 25.True or false: a magnet is not needed for the thread-reel pulley. (a) True (b) False
26. 26.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
27. 27.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) a pencil (c) string (d) coins as the load
28. 28.True or false: a doorknob is a wheel and axle. (a) False (b) True
29. 29.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
30. 30.⚙️ Which of these is an inclined plane? (a) a spoon lifting a lid (b) a sloping road (c) a crowbar (d) a see-saw
31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) yeast (c) a pencil (d) an empty thread reel
32. 32.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 40 cm (c) 20 cm (d) 10 cm
33. 33.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) on the blackboard (c) on the flagpole (d) in the tap
34. 34.⚖️ 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
35. 35.⚙️ Which of these is a lever? (a) a well pulley (b) a slide (c) a sloping road (d) a see-saw
36. 36.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a mirror (c) coins as the load (d) a pencil
37. 37.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) the bucket floats (c) pulling down is easier (d) water gets lighter
38. 38.True or false: a bottle opener is a lever. (a) False (b) True
39. 39.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
40. 40.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a battery cell (c) turmeric powder (d) coins as the load

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