Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 220 · 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.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
2. 2.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
3. 3.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a battery cell (c) a balloon (d) string
4. 4.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
5. 5.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we measure it (b) we change it (c) we keep it the same
6. 6.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) in a circle (c) down (d) sideways
7. 7.⚙️ Which of these is a lever? (a) a see-saw (b) a flagpole (c) a tap handle (d) a steering wheel
8. 8.⚙️ Which of these uses a pulley? (a) a crane (b) a doorknob (c) a spoon lifting a lid (d) a tap handle
9. 9.⚖️ 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 change it (c) we keep it the same
10. 10.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 5 cm (c) 40 cm (d) 10 cm
11. 11.⚖️ 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 keep it the same (b) we measure it (c) we change it
12. 12.🧺 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) string (d) a balloon
13. 13.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets longer (c) it turns blue (d) it gets wet
14. 14.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) about half (c) double (d) the same
15. 15.⚙️ Which of these is a wheel and axle? (a) a slide (b) a sloping road (c) a steering wheel (d) a well pulley
16. 16.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
17. 17.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
18. 18.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it could fall on you (c) it gets hot (d) it is magnetic
19. 19.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a magnet (c) a small paper cup (d) turmeric powder
20. 20.⚖️ 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
21. 21.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) nail (c) rope (d) magnet
22. 22.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
23. 23.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) coins as the load (b) a mirror (c) a magnet (d) turmeric powder
25. 25.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
26. 26.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
27. 27.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
28. 28.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
29. 29.⚙️ Which of these is a lever? (a) a spoon lifting a lid (b) a crane (c) a well pulley (d) a doorknob
30. 30.⚖️ 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) False (b) True
31. 31.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is kept the same. (a) False (b) True
33. 33.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) coins as the load (c) a pencil (d) string
34. 34.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) the bucket floats (c) the rope gets shorter (d) pulling down is easier
35. 35.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a slide (c) a see-saw (d) a bottle opener
36. 36.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
37. 37.True or false: a steering wheel is an inclined plane. (a) False (b) True
38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) an empty thread reel (c) coins as the load (d) a small paper cup
39. 39.True or false: a crowbar uses a pulley. (a) True (b) False
40. 40.True or false: a spoon lifting a lid uses a pulley. (a) True (b) False

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