Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 435 · 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 simple machine is a bottle opener? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
2. 2.⚖️ 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 measure it (c) we keep it the same
3. 3.⚙️ Which simple machine is a see-saw? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
4. 4.🧺 Which of these is not needed for the thread-reel pulley? (a) yeast (b) coins as the load (c) a pencil (d) string
5. 5.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) easier (d) impossible
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a battery cell (c) string (d) an empty thread reel
7. 7.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a small paper cup (c) turmeric powder (d) a magnet
8. 8.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is kept the same. (a) False (b) True
9. 9.True or false: a bottle opener is a lever. (a) False (b) True
10. 10.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it gets hot (c) it could fall on you (d) it might sing
11. 11.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) coins as the load (d) a magnet
12. 12.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) string (c) coins as the load (d) a magnet
13. 13.🧺 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) string (d) a balloon
14. 14.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) rope (c) magnet (d) battery
15. 15.⚙️ Which of these uses a pulley? (a) a doorknob (b) a well pulley (c) a see-saw (d) a bottle opener
16. 16.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 20 cm (c) 40 cm (d) 5 cm
17. 17.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
18. 18.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) coins as the load (c) a balloon (d) string
19. 19.⚖️ 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 measure it (c) we keep it the same
20. 20.True or false: a tap handle is a wheel and axle. (a) True (b) False
21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) coins as the load (d) yeast
22. 22.⚙️ Which of these is an inclined plane? (a) a slide (b) a bottle opener (c) a flagpole (d) a steering wheel
23. 23.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) about half (c) the same (d) zero
24. 24.⚙️ Which simple machine is a sloping road? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
25. 25.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
26. 26.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) coins as the load (c) a battery cell (d) an empty thread reel
27. 27.⚖️ 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
28. 28.⚙️ Which simple machine is a crowbar? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
29. 29.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
30. 30.⚙️ Which of these is a wheel and axle? (a) a slide (b) a bottle opener (c) a steering wheel (d) a crane
31. 31.⚙️ Which of these uses a pulley? (a) a see-saw (b) a tap handle (c) a flagpole (d) a crowbar
32. 32.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
33. 33.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
34. 34.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it can hurt your finger (c) it turns blue (d) it gets longer
35. 35.⚖️ 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 string (b) number of pulleys (c) the same cup of coins (d) how hard we must pull
36. 36.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the bench (c) on the flagpole (d) in the tap
37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) True (b) False
38. 38.⚖️ 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
39. 39.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
40. 40.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) how hard we must pull (b) number of pulleys (c) the same cup of coins

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