Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 522 · 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.🛟 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
2. 2.True or false: a battery cell is needed for the thread-reel pulley. (a) False (b) True
3. 3.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it gets wet (c) it turns blue (d) it can hurt your finger
4. 4.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same string (b) number of pulleys (c) the lifting height (d) how hard we must pull
5. 5.⚖️ 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) number of pulleys (c) the lifting height
6. 6.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) False (b) True
7. 7.True or false: a crowbar is a lever. (a) False (b) True
8. 8.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a pencil (c) a battery cell (d) a balloon
9. 9.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
10. 10.🇮🇳 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
11. 11.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
12. 12.🧺 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) yeast
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) coins as the load (d) a balloon
14. 14.⚙️ Which simple machine is a well pulley? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
15. 15.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
16. 16.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a ramp (c) a bottle opener (d) a flagpole
17. 17.🔮 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
18. 18.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
19. 19.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
20. 20.True or false: a well pulley is a lever. (a) True (b) False
21. 21.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
22. 22.⚙️ Which of these is a wheel and axle? (a) a well pulley (b) a see-saw (c) a doorknob (d) a crowbar
23. 23.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) a pencil (c) an empty thread reel (d) a small paper cup
24. 24.True or false: a crane is a wheel and axle. (a) False (b) True
25. 25.⚖️ 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
26. 26.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a slide (c) a see-saw (d) a crane
27. 27.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) battery (c) magnet (d) nail
28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is the one thing we change. (a) True (b) False
29. 29.🧺 Which of these is needed for the thread-reel pulley? (a) an empty thread reel (b) a balloon (c) a magnet (d) turmeric powder
30. 30.⚖️ 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) number of pulleys (c) the same string
31. 31.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) coins as the load (c) string (d) a mirror
32. 32.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
33. 33.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
34. 34.⚖️ 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 keep it the same (c) we measure it
35. 35.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) zero (c) double (d) about half
36. 36.⚙️ Which of these is an inclined plane? (a) a sloping road (b) a tap handle (c) a steering wheel (d) a doorknob
37. 37.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
38. 38.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
39. 39.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
40. 40.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed

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