Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 436 · 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? Which of these is the one thing we change? (a) the same cup of coins (b) the same string (c) number of pulleys (d) the lifting height
2. 2.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) turmeric powder (c) a mirror (d) an empty thread reel
3. 3.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it gets hot (c) it is magnetic (d) it could fall on you
4. 4.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
5. 5.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) the same (c) zero (d) double
6. 6.True or false: a crowbar is a lever. (a) False (b) True
7. 7.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) an empty thread reel (d) turmeric powder
8. 8.True or false: a steering wheel is a lever. (a) True (b) False
9. 9.⚖️ 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 measure it (c) we keep it the same
10. 10.⚙️ Which of these is a lever? (a) a see-saw (b) a crane (c) a flagpole (d) a slide
11. 11.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) a balloon (d) an empty thread reel
12. 12.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) nail (c) magnet (d) rope
13. 13.⚖️ 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) the same string (c) how hard we must pull (d) the lifting height
14. 14.⚖️ 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 measure it (c) we change it
15. 15.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it can hurt your finger (d) it turns blue
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) yeast (b) a small paper cup (c) string (d) coins as the load
17. 17.True or false: a ramp is an inclined plane. (a) False (b) True
18. 18.True or false: a sloping road uses a pulley. (a) False (b) True
19. 19.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is what we measure. (a) True (b) False
20. 20.True or false: a well pulley uses a pulley. (a) True (b) False
21. 21.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a flagpole (c) a tap handle (d) a sloping road
22. 22.True or false: coins as the load is needed for the thread-reel pulley. (a) True (b) False
23. 23.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) down (b) in a circle (c) sideways (d) up
24. 24.⚙️ Which simple machine is a steering wheel? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
25. 25.⚙️ Which simple machine is a slide? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
26. 26.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a mirror (c) a small paper cup (d) a pencil
27. 27.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) a pencil (c) coins as the load (d) an empty thread reel
28. 28.True or false: a ramp is a wheel and axle. (a) True (b) False
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same cup of coins (b) how hard we must pull (c) number of pulleys
30. 30.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) coins as the load (c) a pencil (d) a magnet
31. 31.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the flagpole (c) in the tap (d) on the bench
32. 32.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a crane (c) a ramp (d) a well pulley
33. 33.⚙️ Which of these is a lever? (a) a steering wheel (b) a doorknob (c) a spoon lifting a lid (d) a crane
34. 34.⚙️ Which simple machine is a spoon lifting a lid? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
35. 35.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) makes it magnetic (c) adds weight (d) halves the weight
36. 36.⚖️ 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 keep it the same (c) we measure it
37. 37.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a battery cell (c) a small paper cup (d) an empty thread reel
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 keep it the same (b) we change it (c) we measure it
39. 39.⚙️ Which of these uses a pulley? (a) a slide (b) a spoon lifting a lid (c) a flagpole (d) a doorknob
40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) a small paper cup (d) a battery cell

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