Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 168 · 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 needed for the thread-reel pulley? (a) a mirror (b) yeast (c) turmeric powder (d) coins as the load
2. 2.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
3. 3.⚖️ 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 measure it (c) we keep it the same
4. 4.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a steering wheel (c) a spoon lifting a lid (d) a ramp
5. 5.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False
6. 6.⚙️ Which of these is a lever? (a) a see-saw (b) a well pulley (c) a steering wheel (d) a slide
7. 7.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) rope (c) magnet (d) battery
8. 8.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) a magnet (d) an empty thread reel
9. 9.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a magnet (c) a small paper cup (d) a pencil
10. 10.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) about half (c) double (d) the same
11. 11.⚖️ 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
12. 12.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) string (c) a mirror (d) a pencil
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) False (b) True
14. 14.🧺 Which of these is not needed for the thread-reel pulley? (a) yeast (b) an empty thread reel (c) a pencil (d) coins as the load
15. 15.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
16. 16.⚖️ 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) how hard we must pull (c) the same cup of coins (d) number of pulleys
17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) turmeric powder (d) an empty thread reel
18. 18.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
19. 19.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
20. 20.⚙️ Which of these is an inclined plane? (a) a crane (b) a sloping road (c) a see-saw (d) a steering wheel
21. 21.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is kept the same. (a) True (b) False
23. 23.⚖️ 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) how hard we must pull (c) the same string (d) the same cup of coins
24. 24.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) a small paper cup (c) turmeric powder (d) an empty thread reel
25. 25.True or false: a crowbar is a wheel and axle. (a) False (b) True
26. 26.⚖️ 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
27. 27.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets wet (c) it can hurt your finger (d) it gets longer
28. 28.⚖️ 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
29. 29.🧺 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 small paper cup
30. 30.True or false: a slide is a wheel and axle. (a) False (b) True
31. 31.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
32. 32.⚙️ Which of these is an inclined plane? (a) a crane (b) a tap handle (c) a spoon lifting a lid (d) a ramp
33. 33.True or false: a see-saw is a wheel and axle. (a) False (b) True
34. 34.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) yeast (c) coins as the load (d) a pencil
35. 35.⚙️ Which of these is a wheel and axle? (a) a crane (b) a bottle opener (c) a doorknob (d) a crowbar
36. 36.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
37. 37.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it gets hot (c) it could fall on you (d) it might sing
38. 38.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a mirror (c) a small paper cup (d) a battery cell
39. 39.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a magnet (c) a balloon (d) string
40. 40.⚖️ 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

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