Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 910 · 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.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) a small paper cup (c) an empty thread reel (d) coins as the load
2. 2.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same cup of coins (b) how hard we must pull (c) number of pulleys (d) the lifting height
3. 3.⚙️ Which of these is a lever? (a) a crane (b) a spoon lifting a lid (c) a ramp (d) a flagpole
4. 4.🏗️ 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
5. 5.🇮🇳 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
6. 6.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
7. 7.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) adds weight (c) halves the weight (d) changes pull direction
8. 8.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) the rope gets shorter (c) pulling down is easier (d) the bucket floats
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 keep it the same (c) we measure it
10. 10.⚙️ Which of these is a lever? (a) a slide (b) a doorknob (c) a see-saw (d) a well pulley
11. 11.🛟 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
12. 12.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
13. 13.⚙️ Which of these is a wheel and axle? (a) a well pulley (b) a doorknob (c) a sloping road (d) a crane
14. 14.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
15. 15.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) string (c) a small paper cup (d) a mirror
16. 16.True or false: a doorknob uses a pulley. (a) False (b) True
17. 17.⚙️ Which of these is a lever? (a) a sloping road (b) a tap handle (c) a well pulley (d) a bottle opener
18. 18.True or false: a well pulley uses a pulley. (a) True (b) False
19. 19.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) True (b) False
20. 20.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) battery (c) rope (d) nail
21. 21.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 10 cm (c) 40 cm (d) 20 cm
22. 22.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a ramp (c) a doorknob (d) a bottle opener
23. 23.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a sloping road (c) a see-saw (d) a steering wheel
24. 24.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) about half (c) zero (d) double
25. 25.⚙️ Which of these is an inclined plane? (a) a slide (b) a doorknob (c) a steering wheel (d) a see-saw
26. 26.⚖️ 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) how hard we must pull (c) the lifting height (d) number of pulleys
27. 27.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
28. 28.⚙️ Which simple machine is a slide? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is kept the same. (a) True (b) False
30. 30.🧺 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
31. 31.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
32. 32.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a pencil (c) turmeric powder (d) an empty thread reel
33. 33.⚖️ 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
34. 34.True or false: yeast is not needed for the thread-reel pulley. (a) False (b) True
35. 35.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets longer (c) it can hurt your finger (d) it gets wet
36. 36.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) string (c) a pencil (d) yeast
37. 37.True or false: a steering wheel is a wheel and axle. (a) False (b) True
38. 38.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
39. 39.🧺 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) turmeric powder (d) a pencil
40. 40.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) coins as the load (c) a magnet (d) turmeric powder

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