Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 113 · 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 ramp? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
2. 2.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a battery cell (c) a magnet (d) string
3. 3.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it is magnetic (c) it might sing (d) it could fall on you
4. 4.⚖️ 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
5. 5.⚖️ 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
6. 6.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) yeast (c) a pencil (d) an empty thread reel
7. 7.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) turmeric powder (c) a balloon (d) an empty thread reel
8. 8.⚙️ Which simple machine is a see-saw? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) a battery cell (b) a pencil (c) coins as the load (d) an empty thread reel
10. 10.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same string (b) number of pulleys (c) how hard we must pull (d) the lifting height
11. 11.True or false: a see-saw uses a pulley. (a) True (b) False
12. 12.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
13. 13.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
14. 14.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a battery cell (c) a small paper cup (d) coins as the load
15. 15.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) magnet (c) battery (d) rope
16. 16.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
17. 17.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we measure it (c) we change it
18. 18.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) halves the weight (c) makes it magnetic (d) adds weight
19. 19.⚖️ 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
20. 20.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
21. 21.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
22. 22.🧺 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
23. 23.⚙️ Which simple machine is a slide? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
24. 24.🧺 Which of these is not needed for the thread-reel pulley? (a) a balloon (b) a small paper cup (c) string (d) an empty thread reel
25. 25.⚙️ Which simple machine is a doorknob? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
26. 26.🧺 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
27. 27.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it turns blue (c) it gets wet (d) it can hurt your finger
28. 28.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a doorknob (c) a crane (d) a slide
29. 29.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) a small paper cup (c) string (d) an empty thread reel
30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) coins as the load (d) a magnet
31. 31.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) double (c) zero (d) about half
32. 32.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) coins as the load (c) a balloon (d) a magnet
33. 33.⚙️ Which of these is a lever? (a) a tap handle (b) a ramp (c) a crowbar (d) a slide
34. 34.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) how hard we must pull (b) number of pulleys (c) the same cup of coins (d) the lifting height
36. 36.True or false: a tap handle is a wheel and axle. (a) True (b) False
37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (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 crane is a lever. (a) True (b) False
40. 40.True or false: a bottle opener is an inclined plane. (a) True (b) False

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