Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 539 · 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 mirror is not needed for the thread-reel pulley. (a) True (b) False
2. 2.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
3. 3.True or false: a crane is a lever. (a) False (b) True
4. 4.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) False (b) True
5. 5.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it gets hot (c) it might sing (d) it could fall on you
6. 6.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) halves the weight (c) changes pull direction (d) adds weight
7. 7.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the blackboard (c) in the tap (d) on the bench
8. 8.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) False (b) True
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) False (b) True
10. 10.🧺 Which of these is not needed for the thread-reel pulley? (a) turmeric powder (b) an empty thread reel (c) coins as the load (d) a small paper cup
11. 11.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) how hard we must pull (b) number of pulleys (c) the lifting height (d) the same cup of coins
12. 12.⚙️ Which of these is a lever? (a) a sloping road (b) a ramp (c) a well pulley (d) a crowbar
13. 13.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
14. 14.⚖️ 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
15. 15.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
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 magnet (d) a small paper cup
17. 17.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
18. 18.True or false: a spoon lifting a lid uses a pulley. (a) True (b) False
19. 19.True or false: a flagpole uses a pulley. (a) True (b) False
20. 20.⚖️ 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
21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a small paper cup (c) string (d) a battery cell
22. 22.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a battery cell (c) yeast (d) coins as the load
23. 23.🧺 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) string (d) turmeric powder
24. 24.⚖️ 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
25. 25.True or false: a crowbar is a lever. (a) False (b) True
26. 26.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
27. 27.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 40 cm (c) 10 cm (d) 5 cm
28. 28.⚙️ Which of these is a lever? (a) a ramp (b) a slide (c) a see-saw (d) a crane
29. 29.⚖️ 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
30. 30.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a balloon (c) string (d) turmeric powder
31. 31.⚙️ Which of these is an inclined plane? (a) a sloping road (b) a steering wheel (c) a see-saw (d) a crane
32. 32.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) an empty thread reel (c) a magnet (d) yeast
33. 33.True or false: a steering wheel uses a pulley. (a) True (b) False
34. 34.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
35. 35.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
36. 36.⚙️ Which simple machine is a well pulley? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
37. 37.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
38. 38.⚙️ Which simple machine is a sloping road? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
39. 39.True or false: a sloping road is an inclined plane. (a) True (b) False
40. 40.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True

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