Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 892 · 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.⚙️ Which simple machine is a tap handle? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
2. 2.⚙️ Which simple machine is a crane? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
3. 3.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
4. 4.⚖️ 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) False (b) True
5. 5.⚖️ 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) True (b) False
6. 6.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) makes it magnetic (c) halves the weight (d) adds weight
7. 7.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) about half (c) double (d) zero
8. 8.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a magnet (c) a mirror (d) a small paper cup
9. 9.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
10. 10.⚙️ Which simple machine is a spoon lifting a lid? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
11. 11.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) the rope gets shorter (c) pulling down is easier (d) water gets lighter
12. 12.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a mirror (c) a pencil (d) a battery cell
13. 13.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) an empty thread reel (c) turmeric powder (d) a mirror
14. 14.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
15. 15.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
16. 16.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) number of pulleys (b) the lifting height (c) how hard we must pull (d) the same string
17. 17.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) coins as the load (c) a battery cell (d) yeast
18. 18.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it could fall on you (c) it gets hot (d) it might sing
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a battery cell (c) a small paper cup (d) an empty thread reel
20. 20.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
21. 21.⚖️ 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 lifting height (c) number of pulleys (d) the same string
22. 22.⚖️ 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 keep it the same (c) we change it
23. 23.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
24. 24.⚖️ 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
25. 25.⚙️ Which of these is an inclined plane? (a) a well pulley (b) a crowbar (c) a flagpole (d) a ramp
26. 26.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we change it (c) we keep it the same
27. 27.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a balloon (c) coins as the load (d) a small paper cup
28. 28.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) impossible (c) harder (d) easier
29. 29.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a ramp (c) a crowbar (d) a flagpole
30. 30.⚖️ 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
31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) a small paper cup (d) turmeric powder
32. 32.True or false: a tap handle is a lever. (a) False (b) True
33. 33.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) coins as the load (c) a small paper cup (d) a pencil
34. 34.True or false: a see-saw is a wheel and axle. (a) True (b) False
35. 35.⚖️ 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 change it (b) we measure it (c) we keep it the same
36. 36.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
37. 37.True or false: a mirror is not needed for the thread-reel pulley. (a) True (b) False
38. 38.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
39. 39.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a mirror (c) a balloon (d) string
40. 40.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True

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