Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 80 · 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 of these is a lever? (a) a spoon lifting a lid (b) a tap handle (c) a sloping road (d) a doorknob
2. 2.True or false: a crane is an inclined plane. (a) True (b) False
3. 3.True or false: string is needed for the thread-reel pulley. (a) True (b) False
4. 4.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a ramp (c) a steering wheel (d) a bottle opener
5. 5.True or false: a crane is a wheel and axle. (a) True (b) False
6. 6.True or false: coins as the load is needed for the thread-reel pulley. (a) False (b) True
7. 7.True or false: a crowbar is an inclined plane. (a) True (b) False
8. 8.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) a pencil (c) a small paper cup (d) string
9. 9.True or false: coins as the load is not needed for the thread-reel pulley. (a) True (b) False
10. 10.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
11. 11.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) coins as the load (c) yeast (d) a battery cell
12. 12.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is kept the same. (a) True (b) False
14. 14.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
15. 15.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it can hurt your finger (c) it turns blue (d) it gets wet
16. 16.⚖️ 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 change it (c) we keep it the same
17. 17.⚙️ Which simple machine is a crane? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
18. 18.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
19. 19.⚙️ Which simple machine is a sloping road? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
20. 20.⚖️ 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
21. 21.⚙️ Which simple machine is a see-saw? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
22. 22.⚙️ Which of these is a wheel and axle? (a) a ramp (b) a sloping road (c) a doorknob (d) a crowbar
23. 23.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 20 cm (c) 10 cm (d) 5 cm
24. 24.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) yeast (c) a small paper cup (d) a pencil
25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) False (b) True
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 change it (b) we keep it the same (c) we measure it
27. 27.⚖️ 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 lifting height
28. 28.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it is magnetic (c) it gets hot (d) it might sing
29. 29.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
30. 30.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
31. 31.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
32. 32.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) turmeric powder (d) string
33. 33.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
34. 34.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a battery cell (c) a mirror (d) string
35. 35.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) coins as the load (c) a battery cell (d) string
36. 36.⚖️ 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 string (b) the same cup of coins (c) number of pulleys (d) the lifting height
37. 37.True or false: a see-saw is a lever. (a) False (b) True
38. 38.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) harder (c) easier (d) the same
39. 39.⚙️ Which of these is a lever? (a) a crane (b) a tap handle (c) a ramp (d) a see-saw
40. 40.⚖️ 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

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