Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 265 · 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 of these is not needed for the thread-reel pulley? (a) string (b) an empty thread reel (c) a magnet (d) a pencil
2. 2.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) True (b) False
4. 4.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the flagpole (c) on the bench (d) on the blackboard
5. 5.⚖️ 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
6. 6.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) string (c) turmeric powder (d) a mirror
7. 7.⚖️ 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
8. 8.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
9. 9.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) a battery cell (d) string
10. 10.True or false: a see-saw is a lever. (a) True (b) False
11. 11.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) False (b) True
12. 12.True or false: a doorknob is an inclined plane. (a) False (b) True
13. 13.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets wet (c) it can hurt your finger (d) it gets longer
14. 14.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) coins as the load (c) a balloon (d) an empty thread reel
15. 15.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
16. 16.⚖️ 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
17. 17.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
18. 18.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) zero (c) double (d) the same
19. 19.🧺 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) turmeric powder (d) a pencil
20. 20.⚙️ Which simple machine is a ramp? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
21. 21.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
22. 22.⚖️ 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
23. 23.⚙️ Which of these is an inclined plane? (a) a bottle opener (b) a ramp (c) a crane (d) a see-saw
24. 24.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
25. 25.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) battery (c) nail (d) rope
26. 26.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a mirror (c) coins as the load (d) string
27. 27.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 5 cm (c) 10 cm (d) 40 cm
28. 28.⚖️ 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) how hard we must pull (d) the same string
29. 29.⚖️ 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) True (b) False
30. 30.⚙️ Which simple machine is a crane? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
31. 31.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a ramp (c) a steering wheel (d) a see-saw
32. 32.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
33. 33.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) an empty thread reel (c) a mirror (d) string
34. 34.⚖️ 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) the lifting height (c) the same string (d) how hard we must pull
35. 35.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
36. 36.True or false: a bottle opener is a lever. (a) False (b) True
37. 37.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) turmeric powder (c) an empty thread reel (d) a small paper cup
38. 38.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
39. 39.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
40. 40.True or false: a slide is a lever. (a) False (b) True

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