Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 424 · 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: number of pulleys is kept the same. (a) True (b) False
2. 2.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it is magnetic (c) it could fall on you (d) it gets hot
3. 3.⚙️ Which simple machine is a crowbar? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
4. 4.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) coins as the load (c) an empty thread reel (d) yeast
5. 5.⚙️ Which of these is a lever? (a) a tap handle (b) a see-saw (c) a steering wheel (d) a crane
6. 6.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) zero (c) the same (d) about half
7. 7.⚙️ Which of these is a lever? (a) a ramp (b) a crowbar (c) a steering wheel (d) a tap handle
8. 8.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
9. 9.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) a pencil (d) a battery cell
10. 10.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
11. 11.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
12. 12.⚖️ 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
13. 13.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it can hurt your finger (c) it gets wet (d) it gets longer
14. 14.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) an empty thread reel (c) a pencil (d) turmeric powder
15. 15.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
16. 16.⚖️ 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
17. 17.True or false: string is needed for the thread-reel pulley. (a) True (b) False
18. 18.True or false: a well pulley is a lever. (a) False (b) True
19. 19.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a slide (c) a steering wheel (d) a well pulley
20. 20.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a magnet (c) turmeric powder (d) an empty thread reel
21. 21.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is the one thing we change. (a) True (b) False
22. 22.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
23. 23.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the same cup of coins (b) the same string (c) number of pulleys (d) how hard we must pull
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a balloon (c) a small paper cup (d) coins as the load
25. 25.⚙️ Which of these is a lever? (a) a well pulley (b) a spoon lifting a lid (c) a doorknob (d) a sloping road
26. 26.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
27. 27.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
28. 28.⚖️ 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) number of pulleys (c) the same string
29. 29.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
30. 30.True or false: a well pulley is an inclined plane. (a) False (b) True
31. 31.True or false: coins as the load is not needed for the thread-reel pulley. (a) True (b) False
32. 32.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
33. 33.True or false: a doorknob is a wheel and axle. (a) True (b) False
34. 34.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
35. 35.⚖️ 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
36. 36.⚖️ 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
37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) False (b) True
38. 38.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a tap handle (c) a sloping road (d) a crowbar
39. 39.⚙️ Which of these uses a pulley? (a) a crane (b) a bottle opener (c) a tap handle (d) a ramp
40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) coins as the load (c) an empty thread reel (d) string

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