Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 985 · 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: a crane uses a pulley. (a) False (b) True
2. 2.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a battery cell (c) string (d) a pencil
3. 3.⚙️ Which of these uses a pulley? (a) a slide (b) a crane (c) a sloping road (d) a steering wheel
4. 4.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
5. 5.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) how hard we must pull (b) the same string (c) the same cup of coins (d) the lifting height
6. 6.⚖️ 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
7. 7.True or false: coins as the load is needed for the thread-reel pulley. (a) False (b) True
8. 8.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same cup of coins (b) number of pulleys (c) how hard we must pull
9. 9.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
10. 10.⚙️ Which of these is a lever? (a) a spoon lifting a lid (b) a doorknob (c) a steering wheel (d) a well pulley
11. 11.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we measure it (b) we keep it the same (c) we change it
12. 12.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) coins as the load (d) a battery cell
14. 14.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) turmeric powder (c) coins as the load (d) string
15. 15.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) impossible (c) easier (d) harder
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.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
18. 18.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) turmeric powder (c) a balloon (d) an empty thread reel
19. 19.⚖️ 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 keep it the same (c) we measure it
20. 20.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
21. 21.⚖️ 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
22. 22.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) nail (c) battery (d) magnet
23. 23.True or false: a crowbar is a lever. (a) True (b) False
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) turmeric powder (c) a balloon (d) coins as the load
25. 25.True or false: a doorknob uses a pulley. (a) True (b) False
26. 26.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) a small paper cup (c) string (d) an empty thread reel
27. 27.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
28. 28.⚖️ 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
29. 29.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) an empty thread reel (c) a magnet (d) a pencil
30. 30.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
31. 31.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a crowbar (c) a bottle opener (d) a sloping road
32. 32.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
33. 33.True or false: a steering wheel is a lever. (a) True (b) False
34. 34.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the flagpole (c) on the bench (d) in the tap
35. 35.True or false: a mirror is not needed for the thread-reel pulley. (a) True (b) False
36. 36.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) zero (c) about half (d) the same
37. 37.⚙️ Which of these is a lever? (a) a ramp (b) a well pulley (c) a sloping road (d) a bottle opener
38. 38.⚙️ Which of these is an inclined plane? (a) a well pulley (b) a steering wheel (c) a slide (d) a doorknob
39. 39.🧺 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) string (d) a balloon
40. 40.⚖️ 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

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids