Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 915 · 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 “number of pulleys”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
3. 3.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a pencil (c) a mirror (d) a balloon
4. 4.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) an empty thread reel (c) yeast (d) coins as the load
5. 5.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it is magnetic (c) it might sing (d) it could fall on you
6. 6.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
7. 7.⚖️ 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) False (b) True
8. 8.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a balloon (c) yeast (d) an empty thread reel
9. 9.⚙️ Which simple machine is a flagpole? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
10. 10.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
11. 11.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) the same (c) harder (d) easier
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) a balloon (d) an empty thread reel
13. 13.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the blackboard (c) on the bench (d) in the tap
14. 14.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a balloon (c) an empty thread reel (d) string
15. 15.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets wet (c) it gets longer (d) it turns blue
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a small paper cup (c) a battery cell (d) a pencil
17. 17.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
18. 18.⚙️ Which simple machine is a steering wheel? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
19. 19.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
20. 20.⚖️ 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 same string (c) number of pulleys
21. 21.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) yeast (c) turmeric powder (d) coins as the load
22. 22.True or false: a battery cell 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 balloon (b) a small paper cup (c) turmeric powder (d) yeast
24. 24.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) nail (c) rope (d) battery
25. 25.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
26. 26.True or false: a steering wheel is a wheel and axle. (a) False (b) True
27. 27.⚙️ Which of these uses a pulley? (a) a tap handle (b) a spoon lifting a lid (c) a sloping road (d) a well pulley
28. 28.⚙️ Which simple machine is a ramp? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
29. 29.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
30. 30.⚙️ Which of these uses a pulley? (a) a tap handle (b) a sloping road (c) a steering wheel (d) a crane
31. 31.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a ramp (c) a bottle opener (d) a crowbar
32. 32.True or false: a bottle opener is a lever. (a) True (b) False
33. 33.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) True (b) False
34. 34.⚖️ 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 measure it (b) we keep it the same (c) we change it
35. 35.⚙️ Which simple machine is a see-saw? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
36. 36.True or false: a ramp is an inclined plane. (a) True (b) False
37. 37.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
38. 38.⚖️ 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 keep it the same (c) we change it
39. 39.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
40. 40.⚖️ 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 string (b) the lifting height (c) the same cup of coins (d) number of pulleys

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