Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 666 · 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.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) yeast (d) a pencil
2. 2.⚖️ 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 measure it (c) we keep it the same
3. 3.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) an empty thread reel (c) a balloon (d) a battery cell
4. 4.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a ramp (c) a steering wheel (d) a flagpole
5. 5.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
6. 6.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a mirror (c) string (d) a magnet
7. 7.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
8. 8.True or false: a tap handle uses a pulley. (a) True (b) False
9. 9.⚙️ Which of these is a wheel and axle? (a) a tap handle (b) a sloping road (c) a crowbar (d) a ramp
10. 10.🛟 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
11. 11.⚙️ Which simple machine is a tap handle? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
12. 12.True or false: a ramp is an inclined plane. (a) True (b) False
13. 13.⚖️ 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) the lifting height (c) number of pulleys (d) the same string
14. 14.⚙️ Which simple machine is a slide? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
15. 15.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) string (c) an empty thread reel (d) a small paper cup
16. 16.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
17. 17.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 10 cm (c) 5 cm (d) 40 cm
18. 18.True or false: a steering wheel is an inclined plane. (a) False (b) True
19. 19.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) the bucket floats (c) pulling down is easier (d) water gets lighter
20. 20.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) a pencil (d) a balloon
21. 21.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) double (c) the same (d) zero
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.⚖️ 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
24. 24.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) how hard we must pull (b) the same cup of coins (c) the lifting height (d) the same string
25. 25.⚙️ Which simple machine is a sloping road? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
26. 26.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) an empty thread reel (c) string (d) a balloon
27. 27.True or false: a see-saw is a lever. (a) False (b) True
28. 28.⚙️ Which of these is a wheel and axle? (a) a see-saw (b) a steering wheel (c) a spoon lifting a lid (d) a flagpole
29. 29.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) number of pulleys (b) how hard we must pull (c) the lifting height
31. 31.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it gets hot (c) it might sing (d) it could fall on you
32. 32.True or false: a tap handle is a lever. (a) True (b) False
33. 33.⚖️ 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) False (b) True
34. 34.⚙️ Which simple machine is a ramp? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
35. 35.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
36. 36.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
37. 37.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a doorknob (c) a slide (d) a crowbar
38. 38.True or false: a mirror is not needed for the thread-reel pulley. (a) True (b) False
39. 39.⚙️ Which of these is an inclined plane? (a) a sloping road (b) a spoon lifting a lid (c) a steering wheel (d) a crane
40. 40.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) yeast (c) an empty thread reel (d) coins as the load

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