Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 760 · 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 simple machine is a bottle opener? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
2. 2.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
3. 3.True or false: a well pulley uses a pulley. (a) False (b) True
4. 4.True or false: a flagpole is an inclined plane. (a) False (b) True
5. 5.⚙️ Which of these is a lever? (a) a ramp (b) a sloping road (c) a crane (d) a see-saw
6. 6.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
7. 7.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
8. 8.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) the rope gets shorter (c) pulling down is easier (d) water gets lighter
9. 9.⚖️ 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
10. 10.⚖️ 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 change it (b) we measure it (c) we keep it the same
11. 11.True or false: a ramp is a lever. (a) True (b) False
12. 12.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
13. 13.⚖️ 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 change it (c) we measure it
14. 14.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) down (c) sideways (d) in a circle
15. 15.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) in the tap (c) on the flagpole (d) on the blackboard
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) a small paper cup (c) a pencil (d) an empty thread reel
17. 17.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
18. 18.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 20 cm (c) 10 cm (d) 5 cm
19. 19.⚖️ 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) True (b) False
20. 20.⚖️ 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
21. 21.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) an empty thread reel (c) yeast (d) string
22. 22.True or false: a slide is an inclined plane. (a) False (b) True
23. 23.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
24. 24.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
25. 25.⚙️ Which of these uses a pulley? (a) a crowbar (b) a well pulley (c) a doorknob (d) a steering wheel
26. 26.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets wet (c) it gets longer (d) it can hurt your finger
27. 27.True or false: a steering wheel uses a pulley. (a) True (b) False
28. 28.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it might sing (c) it gets hot (d) it is magnetic
29. 29.⚖️ 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 keep it the same (c) we measure it
30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) string (d) a battery cell
31. 31.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a battery cell (c) an empty thread reel (d) a balloon
32. 32.⚖️ 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 cup of coins (d) how hard we must pull
33. 33.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
34. 34.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a small paper cup (c) a balloon (d) turmeric powder
35. 35.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
36. 36.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
37. 37.⚖️ 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) the same cup of coins (c) how hard we must pull
38. 38.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
39. 39.True or false: string is needed for the thread-reel pulley. (a) False (b) True
40. 40.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a pencil (c) a magnet (d) yeast

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