Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 527 · 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.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
2. 2.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
3. 3.🔮 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
4. 4.⚖️ 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
5. 5.True or false: a doorknob is an inclined plane. (a) True (b) False
6. 6.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a bottle opener (c) a flagpole (d) a slide
7. 7.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True
8. 8.⚖️ 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
9. 9.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a battery cell (c) coins as the load (d) a balloon
10. 10.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) how hard we must pull (b) the same cup of coins (c) number of pulleys (d) the same string
11. 11.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) coins as the load (d) a battery cell
12. 12.⚙️ Which simple machine is a tap handle? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a pencil (c) an empty thread reel (d) yeast
14. 14.⚙️ Which of these is an inclined plane? (a) a spoon lifting a lid (b) a crane (c) a ramp (d) a steering wheel
15. 15.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) a small paper cup (d) a mirror
16. 16.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it might sing (c) it could fall on you (d) it is magnetic
17. 17.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
18. 18.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
19. 19.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is the one thing we change. (a) False (b) True
20. 20.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) about half (c) the same (d) zero
21. 21.⚖️ 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
22. 22.⚙️ Which of these is a lever? (a) a ramp (b) a bottle opener (c) a slide (d) a sloping road
23. 23.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
24. 24.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a well pulley (c) a doorknob (d) a crane
25. 25.⚖️ 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
26. 26.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it can hurt your finger (c) it gets longer (d) it gets wet
27. 27.True or false: a crane is a wheel and axle. (a) False (b) True
28. 28.⚖️ 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 measure it (b) we keep it the same (c) we change it
29. 29.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
30. 30.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
31. 31.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
32. 32.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) pulling down is easier (c) the bucket floats (d) water gets lighter
33. 33.True or false: a crowbar is a wheel and axle. (a) True (b) False
34. 34.🧺 Which of these is not needed for the thread-reel pulley? (a) a battery cell (b) coins as the load (c) string (d) a pencil
35. 35.⚙️ Which simple machine is a crane? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
36. 36.True or false: a bottle opener is a lever. (a) True (b) False
37. 37.⚙️ Which simple machine is a steering wheel? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
38. 38.🇮🇳 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
39. 39.⚖️ 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
40. 40.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we measure it (c) we keep it the same

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