Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 500 · 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 not needed for the thread-reel pulley? (a) a pencil (b) string (c) an empty thread reel (d) a magnet
2. 2.🧺 Which of these is not needed for the thread-reel pulley? (a) turmeric powder (b) coins as the load (c) an empty thread reel (d) a small paper cup
3. 3.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
4. 4.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it is magnetic (c) it might sing (d) it gets hot
5. 5.True or false: string is needed for the thread-reel pulley. (a) True (b) False
6. 6.True or false: a flagpole uses a pulley. (a) True (b) False
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “how hard we must pull”? (a) we keep it the same (b) we change it (c) we measure it
8. 8.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a magnet (c) an empty thread reel (d) coins as the load
9. 9.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
10. 10.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the lifting height (b) the same cup of coins (c) how hard we must pull (d) number of pulleys
11. 11.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
12. 12.⚙️ Which of these uses a pulley? (a) a spoon lifting a lid (b) a flagpole (c) a ramp (d) a bottle opener
13. 13.True or false: a crane is a lever. (a) True (b) False
14. 14.⚙️ Which of these is a lever? (a) a flagpole (b) a doorknob (c) a well pulley (d) a crowbar
15. 15.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
16. 16.🏗️ Why is a pulley used to lift water from a deep well? (a) pulling down is easier (b) the rope gets shorter (c) the bucket floats (d) water gets lighter
17. 17.True or false: a sloping road is an inclined plane. (a) True (b) False
18. 18.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is what we measure. (a) False (b) True
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) an empty thread reel (d) yeast
20. 20.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
21. 21.⚖️ 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
22. 22.True or false: a bottle opener uses a pulley. (a) False (b) True
23. 23.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
24. 24.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) a mirror (d) string
25. 25.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
26. 26.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a crane (c) a crowbar (d) a ramp
27. 27.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
28. 28.True or false: coins as the load is not needed for the thread-reel pulley. (a) True (b) False
29. 29.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we keep it the same (b) we measure it (c) we change it
31. 31.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
32. 32.⚙️ Which simple machine is a ramp? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
33. 33.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) easier (c) the same (d) harder
34. 34.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 10 cm (c) 40 cm (d) 20 cm
35. 35.True or false: a battery cell is needed for the thread-reel pulley. (a) False (b) True
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) the lifting height (d) number of pulleys
37. 37.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a pencil (c) an empty thread reel (d) a balloon
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.⚖️ 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
40. 40.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley

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