Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 606 · 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? What do we do with “the same string”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.⚙️ Which of these uses a pulley? (a) a see-saw (b) a flagpole (c) a slide (d) a tap handle
3. 3.⚖️ 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
4. 4.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) nail (c) battery (d) rope
5. 5.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
6. 6.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) coins as the load (c) a balloon (d) turmeric powder
7. 7.⚖️ 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 cup of coins
8. 8.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
9. 9.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) yeast (c) a small paper cup (d) an empty thread reel
10. 10.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a battery cell (c) a pencil (d) a balloon
11. 11.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False
12. 12.⚖️ 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) True (b) False
13. 13.⚖️ 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
14. 14.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it turns blue (c) it gets wet (d) it gets longer
15. 15.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a crane (c) a sloping road (d) a spoon lifting a lid
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) coins as the load (c) a small paper cup (d) an empty thread reel
17. 17.⚖️ 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
18. 18.🧺 Which of these is needed for the thread-reel pulley? (a) a small paper cup (b) a balloon (c) a battery cell (d) a magnet
19. 19.⚙️ Which of these is a lever? (a) a steering wheel (b) a ramp (c) a bottle opener (d) a sloping road
20. 20.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
21. 21.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it gets hot (c) it might sing (d) it is magnetic
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the lifting height (b) the same string (c) number of pulleys (d) how hard we must pull
23. 23.⚙️ Which of these uses a pulley? (a) a see-saw (b) a sloping road (c) a steering wheel (d) a well pulley
24. 24.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
25. 25.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
26. 26.⚙️ Which simple machine is a see-saw? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
27. 27.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a small paper cup (c) a magnet (d) string
28. 28.True or false: string is needed for the thread-reel pulley. (a) False (b) True
29. 29.⚖️ 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
30. 30.⚙️ Which simple machine is a flagpole? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
31. 31.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) halves the weight (c) changes pull direction (d) adds weight
32. 32.⚖️ 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
33. 33.⚙️ Which simple machine is a doorknob? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
34. 34.True or false: a slide is a lever. (a) True (b) False
35. 35.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) double (c) about half (d) zero
36. 36.⚙️ Which of these is a wheel and axle? (a) a bottle opener (b) a ramp (c) a steering wheel (d) a crowbar
37. 37.True or false: a see-saw is a wheel and axle. (a) False (b) True
38. 38.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) True (b) False
39. 39.True or false: a bottle opener is a wheel and axle. (a) True (b) False
40. 40.⚙️ Which simple machine is a sloping road? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley

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