Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 556 · 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.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
2. 2.True or false: a spoon lifting a lid is a lever. (a) True (b) False
3. 3.⚙️ Which simple machine is a sloping road? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
4. 4.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets wet (c) it turns blue (d) it gets longer
5. 5.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
6. 6.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it could fall on you (c) it is magnetic (d) it gets hot
7. 7.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
8. 8.⚙️ Which of these is a lever? (a) a flagpole (b) a ramp (c) a crowbar (d) a tap handle
9. 9.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) a small paper cup (d) a battery cell
10. 10.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) up (c) down (d) sideways
11. 11.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) coins as the load (c) a balloon (d) a small paper cup
12. 12.⚖️ 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 measure it (c) we keep it the same
13. 13.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
14. 14.True or false: a flagpole uses a pulley. (a) False (b) True
15. 15.⚖️ 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) False (b) True
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) string (c) a mirror (d) an empty thread reel
17. 17.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) turmeric powder (c) a magnet (d) coins as the load
18. 18.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) the same (c) about half (d) zero
19. 19.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a slide (c) a crane (d) a tap handle
20. 20.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
21. 21.True or false: a well pulley is a lever. (a) True (b) False
22. 22.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) string (c) a small paper cup (d) coins as the load
23. 23.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 10 cm (c) 20 cm (d) 40 cm
24. 24.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is what we measure. (a) True (b) False
25. 25.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
26. 26.⚙️ Which of these is a lever? (a) a see-saw (b) a doorknob (c) a well pulley (d) a steering wheel
27. 27.True or false: a see-saw is a wheel and axle. (a) False (b) True
28. 28.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
29. 29.🧺 Which of these is needed for the thread-reel pulley? (a) string (b) a magnet (c) yeast (d) a battery cell
30. 30.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
31. 31.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we measure it (b) we keep it the same (c) we change it
32. 32.⚖️ 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) the same cup of coins (d) how hard we must pull
33. 33.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) in the tap (c) on the bench (d) on the blackboard
34. 34.⚖️ 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
35. 35.⚙️ Which simple machine is a tap handle? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
36. 36.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) a small paper cup (c) coins as the load (d) an empty thread reel
37. 37.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) an empty thread reel (c) a pencil (d) turmeric powder
38. 38.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) harder (c) easier (d) the same
39. 39.True or false: a crowbar is a wheel and axle. (a) True (b) False
40. 40.⚙️ Which of these is a wheel and axle? (a) a slide (b) a crowbar (c) a spoon lifting a lid (d) a steering wheel

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