Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 656 · 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.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
2. 2.⚙️ Which of these is a lever? (a) a well pulley (b) a flagpole (c) a bottle opener (d) a steering wheel
3. 3.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
4. 4.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) True (b) False
5. 5.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets longer (c) it gets wet (d) it can hurt your finger
6. 6.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it might sing (c) it is magnetic (d) it gets hot
7. 7.🧺 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 pencil
8. 8.⚙️ Which of these uses a pulley? (a) a sloping road (b) a flagpole (c) a slide (d) a spoon lifting a lid
9. 9.⚖️ 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 cup of coins (b) the lifting height (c) number of pulleys (d) how hard we must pull
10. 10.⚙️ Which simple machine is a well pulley? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
11. 11.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) water gets lighter (c) the bucket floats (d) pulling down is easier
12. 12.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a flagpole (c) a steering wheel (d) a well pulley
13. 13.⚖️ 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
14. 14.⚙️ Which of these is a lever? (a) a steering wheel (b) a see-saw (c) a flagpole (d) a tap handle
15. 15.🧺 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) coins as the load (d) a battery cell
16. 16.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) in the tap (c) on the bench (d) on the flagpole
17. 17.True or false: a crowbar is a lever. (a) False (b) True
18. 18.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
19. 19.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
20. 20.⚖️ 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 same cup of coins
21. 21.True or false: a bottle opener is a lever. (a) True (b) False
22. 22.⚙️ Which simple machine is a sloping road? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
23. 23.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 5 cm (c) 20 cm (d) 40 cm
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) yeast (c) a small paper cup (d) string
25. 25.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) zero (c) about half (d) double
26. 26.True or false: a spoon lifting a lid uses a pulley. (a) True (b) False
27. 27.True or false: a steering wheel uses a pulley. (a) True (b) False
28. 28.⚖️ 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) number of pulleys (c) the same string (d) how hard we must pull
29. 29.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
30. 30.True or false: a well pulley is a lever. (a) False (b) True
31. 31.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
32. 32.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) easier (d) impossible
33. 33.⚖️ 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
34. 34.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
35. 35.True or false: a well pulley uses a pulley. (a) True (b) False
36. 36.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a pencil (c) turmeric powder (d) a balloon
37. 37.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a pencil (c) string (d) a magnet
39. 39.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
40. 40.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed

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