Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 566 · 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? True or false: the same string is kept the same. (a) False (b) True
2. 2.True or false: a steering wheel is a lever. (a) False (b) True
3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is the one thing we change. (a) False (b) True
4. 4.⚙️ Which of these uses a pulley? (a) a flagpole (b) a tap handle (c) a steering wheel (d) a bottle opener
5. 5.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
6. 6.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 10 cm (c) 40 cm (d) 20 cm
7. 7.⚖️ 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
8. 8.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it could fall on you (c) it might sing (d) it gets hot
9. 9.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
10. 10.⚖️ 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 lifting height (c) the same cup of coins (d) number of pulleys
11. 11.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) coins as the load (c) an empty thread reel (d) a mirror
12. 12.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) sideways (c) down (d) in a circle
13. 13.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True
14. 14.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a balloon (c) a pencil (d) yeast
15. 15.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it turns blue (c) it gets longer (d) it can hurt your finger
16. 16.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
17. 17.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) halves the weight (c) makes it magnetic (d) adds weight
18. 18.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) easier (c) harder (d) the same
19. 19.⚖️ 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
20. 20.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
21. 21.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
22. 22.⚖️ 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) how hard we must pull (c) the same cup of coins
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a mirror (c) a pencil (d) coins as the load
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) yeast (c) turmeric powder (d) an empty thread reel
25. 25.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) coins as the load (c) yeast (d) string
26. 26.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is what we measure. (a) True (b) False
27. 27.⚖️ 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
28. 28.⚙️ Which of these uses a pulley? (a) a well pulley (b) a crowbar (c) a steering wheel (d) a spoon lifting a lid
29. 29.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) in the tap (c) on the blackboard (d) on the bench
30. 30.⚙️ Which simple machine is a see-saw? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) an empty thread reel (c) a pencil (d) a small paper cup
32. 32.⚖️ 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
33. 33.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a small paper cup (c) turmeric powder (d) a mirror
34. 34.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the same cup of coins (b) number of pulleys (c) how hard we must pull (d) the same string
35. 35.⚖️ 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 keep it the same (b) we measure it (c) we change it
36. 36.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) about half (c) double (d) zero
37. 37.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
38. 38.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) string (d) turmeric powder
39. 39.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
40. 40.True or false: a bottle opener uses a pulley. (a) False (b) True

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