Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 856 · 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 the one thing we change? (a) number of pulleys (b) the lifting height (c) the same cup of coins (d) the same string
2. 2.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a mirror (c) a battery cell (d) a small paper cup
3. 3.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) string (c) a magnet (d) coins as the load
4. 4.⚙️ Which simple machine is a flagpole? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
5. 5.⚖️ 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) False (b) True
6. 6.True or false: a spoon lifting a lid is a lever. (a) True (b) False
7. 7.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a pencil (c) a balloon (d) turmeric powder
8. 8.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) impossible (c) the same (d) harder
9. 9.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) rope (c) nail (d) battery
10. 10.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.True or false: a flagpole uses a pulley. (a) True (b) False
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) a small paper cup (d) an empty thread reel
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 change it (b) we keep it the same (c) we measure it
14. 14.⚖️ 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
15. 15.⚖️ 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
16. 16.🛟 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
17. 17.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
18. 18.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
19. 19.⚙️ Which of these uses a pulley? (a) a crowbar (b) a steering wheel (c) a flagpole (d) a bottle opener
20. 20.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a ramp (c) a bottle opener (d) a doorknob
21. 21.True or false: a tap handle is a wheel and axle. (a) True (b) False
22. 22.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the blackboard (c) on the bench (d) on the flagpole
23. 23.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) True (b) False
24. 24.⚖️ 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
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 slide (b) a crowbar (c) a steering wheel (d) a tap handle
27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same cup of coins (b) how hard we must pull (c) number of pulleys (d) the lifting height
28. 28.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) an empty thread reel (d) a mirror
29. 29.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
30. 30.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
31. 31.⚖️ 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) False (b) True
32. 32.⚖️ 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
33. 33.⚖️ 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
34. 34.🧺 Which of these is not needed for the thread-reel pulley? (a) a mirror (b) coins as the load (c) a small paper cup (d) a pencil
35. 35.True or false: a slide is a wheel and axle. (a) True (b) False
36. 36.⚖️ 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 measure it (c) we keep it the same
37. 37.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
38. 38.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
39. 39.True or false: a see-saw uses a pulley. (a) True (b) False
40. 40.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True

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