Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 585 · 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? True or false: the same cup of coins is the one thing we change. (a) True (b) False
2. 2.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a magnet (c) coins as the load (d) turmeric powder
3. 3.⚙️ Which simple machine is a ramp? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
4. 4.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) zero (c) the same (d) double
5. 5.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets wet (c) it can hurt your finger (d) it gets longer
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a pencil (c) an empty thread reel (d) a mirror
7. 7.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) makes it magnetic (c) changes pull direction (d) halves the weight
8. 8.True or false: string is needed for the thread-reel pulley. (a) True (b) False
9. 9.⚖️ 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
10. 10.⚖️ 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
11. 11.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) yeast (c) a small paper cup (d) an empty thread reel
12. 12.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
13. 13.⚙️ Which of these uses a pulley? (a) a well pulley (b) a spoon lifting a lid (c) a bottle opener (d) a slide
14. 14.🧺 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) a pencil (d) yeast
15. 15.True or false: a steering wheel is a wheel and axle. (a) False (b) True
16. 16.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
17. 17.⚙️ Which simple machine is a crowbar? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
18. 18.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it could fall on you (c) it is magnetic (d) it gets hot
19. 19.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
20. 20.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
21. 21.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False
22. 22.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) coins as the load (d) a magnet
24. 24.⚙️ Which simple machine is a steering wheel? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
25. 25.True or false: a tap handle is a lever. (a) False (b) True
26. 26.🏗️ 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
27. 27.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) how hard we must pull (b) the same cup of coins (c) the lifting height (d) the same string
29. 29.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) a small paper cup (c) coins as the load (d) an empty thread reel
30. 30.True or false: a slide uses a pulley. (a) True (b) False
31. 31.⚖️ 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
32. 32.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
33. 33.⚙️ Which simple machine is a tap handle? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
34. 34.🧺 Which of these is needed for the thread-reel pulley? (a) string (b) a battery cell (c) a balloon (d) a mirror
35. 35.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) False (b) True
36. 36.⚙️ Which of these uses a pulley? (a) a flagpole (b) a slide (c) a see-saw (d) a spoon lifting a lid
37. 37.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
38. 38.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) easier (c) impossible (d) the same
39. 39.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a ramp (c) a steering wheel (d) a crowbar
40. 40.⚙️ Which simple machine is a crane? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley

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