Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 122 · 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? Which of these is kept the same? (a) how hard we must pull (b) the same cup of coins (c) number of pulleys
2. 2.⚙️ Which of these uses a pulley? (a) a tap handle (b) a flagpole (c) a bottle opener (d) a steering wheel
3. 3.⚙️ Which simple machine is a tap handle? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
4. 4.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a small paper cup (c) a balloon (d) a pencil
5. 5.True or false: a steering wheel uses a pulley. (a) False (b) True
6. 6.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a small paper cup (c) a magnet (d) string
7. 7.⚖️ 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) the lifting height (c) how hard we must pull (d) the same string
8. 8.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a small paper cup (c) yeast (d) a pencil
9. 9.⚖️ 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) the lifting height (c) number of pulleys
10. 10.⚙️ Which of these is an inclined plane? (a) a ramp (b) a spoon lifting a lid (c) a well pulley (d) a see-saw
11. 11.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
12. 12.⚖️ 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) number of pulleys (c) the same string (d) the same cup of coins
13. 13.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) about half (c) zero (d) double
14. 14.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) water gets lighter (c) pulling down is easier (d) the bucket floats
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: the lifting height is kept the same. (a) False (b) True
17. 17.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a battery cell (c) coins as the load (d) a magnet
18. 18.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
19. 19.⚖️ 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 keep it the same (c) we measure it
20. 20.True or false: a slide is a lever. (a) False (b) True
21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) yeast (d) an empty thread reel
22. 22.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
23. 23.True or false: a well pulley is an inclined plane. (a) False (b) True
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) string (b) a mirror (c) a battery cell (d) a magnet
25. 25.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
26. 26.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
27. 27.⚙️ Which of these is a wheel and axle? (a) a slide (b) a see-saw (c) a bottle opener (d) a tap handle
28. 28.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
29. 29.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the flagpole (c) on the bench (d) on the blackboard
30. 30.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a pencil (c) a balloon (d) an empty thread reel
31. 31.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
32. 32.⚖️ 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) False (b) True
33. 33.True or false: a steering wheel is a wheel and axle. (a) False (b) True
34. 34.True or false: a tap handle is a wheel and axle. (a) False (b) True
35. 35.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets longer (c) it turns blue (d) it gets wet
36. 36.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a spoon lifting a lid (c) a crowbar (d) a sloping road
37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we measure it (c) we change it
38. 38.True or false: a tap handle is a lever. (a) False (b) True
39. 39.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
40. 40.⚙️ Which simple machine is a steering wheel? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle

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