Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 857 · 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 a balloon for the thread-reel pulley? (a) needed (b) not needed
2. 2.⚖️ 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) the lifting height (c) number of pulleys
3. 3.⚖️ 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 keep it the same (b) we measure it (c) we change it
4. 4.⚙️ Which of these uses a pulley? (a) a crowbar (b) a ramp (c) a sloping road (d) a well pulley
5. 5.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it might sing (c) it is magnetic (d) it gets hot
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a small paper cup (c) a pencil (d) yeast
7. 7.True or false: a see-saw uses a pulley. (a) True (b) False
8. 8.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
9. 9.⚖️ 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 same string (c) the lifting height (d) the same cup of coins
10. 10.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it can hurt your finger (d) it turns blue
11. 11.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
12. 12.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) magnet (c) battery (d) rope
13. 13.True or false: a see-saw is a lever. (a) True (b) False
14. 14.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) a balloon (d) a pencil
15. 15.⚙️ Which of these is a lever? (a) a slide (b) a sloping road (c) a ramp (d) a crowbar
16. 16.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a magnet (c) a balloon (d) an empty thread reel
17. 17.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
18. 18.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) False (b) True
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.⚖️ 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) False (b) True
21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a small paper cup (c) a mirror (d) string
22. 22.⚖️ 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 measure it (c) we keep it the same
23. 23.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a tap handle (c) a ramp (d) a crane
24. 24.True or false: a magnet is not needed for the thread-reel pulley. (a) True (b) False
25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) number of pulleys (b) the lifting height (c) the same string (d) how hard we must pull
26. 26.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
27. 27.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a ramp (c) a bottle opener (d) a well pulley
28. 28.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) coins as the load (c) a magnet (d) a small paper cup
29. 29.True or false: a bottle opener uses a pulley. (a) True (b) False
30. 30.True or false: a ramp uses a pulley. (a) True (b) False
31. 31.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a balloon (c) a pencil (d) turmeric powder
32. 32.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
33. 33.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) the same (c) zero (d) double
34. 34.⚙️ Which simple machine is a doorknob? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
35. 35.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
36. 36.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
37. 37.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a magnet (c) yeast (d) a small paper cup
38. 38.🧺 Which of these is not needed for the thread-reel pulley? (a) a mirror (b) an empty thread reel (c) a pencil (d) coins as the load
39. 39.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
40. 40.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle

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