Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 70 · 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: number of pulleys is the one thing we change. (a) False (b) True
2. 2.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is the one thing we change. (a) True (b) False
4. 4.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it can hurt your finger (c) it gets wet (d) it turns blue
5. 5.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
6. 6.⚖️ 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 change it (c) we keep it the same
7. 7.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) the same (c) zero (d) about half
8. 8.True or false: a doorknob is a wheel and axle. (a) True (b) False
9. 9.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) magnet (c) nail (d) battery
10. 10.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it could fall on you (c) it might sing (d) it is magnetic
11. 11.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) pulling down is easier (c) the bucket floats (d) water gets lighter
12. 12.⚖️ 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) True (b) False
13. 13.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) coins as the load (c) yeast (d) string
14. 14.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a steering wheel (c) a well pulley (d) a crowbar
15. 15.⚙️ Which simple machine is a tap handle? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
16. 16.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) turmeric powder (c) a mirror (d) a small paper cup
17. 17.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) easier (d) impossible
18. 18.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a magnet (c) yeast (d) coins as the load
19. 19.⚙️ Which of these is a wheel and axle? (a) a sloping road (b) a slide (c) a tap handle (d) a ramp
20. 20.⚖️ 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 measure it (b) we keep it the same (c) we change it
21. 21.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
22. 22.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) turmeric powder (c) an empty thread reel (d) a magnet
23. 23.⚙️ Which simple machine is a crane? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) an empty thread reel (d) string
25. 25.⚙️ Which of these is an inclined plane? (a) a slide (b) a tap handle (c) a bottle opener (d) a steering wheel
26. 26.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the bench (c) on the blackboard (d) in the tap
27. 27.⚖️ 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 same cup of coins (d) the same string
28. 28.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
29. 29.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
30. 30.⚙️ Which of these uses a pulley? (a) a crane (b) a sloping road (c) a slide (d) a ramp
31. 31.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 10 cm (c) 20 cm (d) 5 cm
32. 32.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) a pencil (d) a battery cell
33. 33.⚙️ Which simple machine is a see-saw? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
34. 34.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a pencil (c) a balloon (d) yeast
35. 35.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) yeast (c) coins as the load (d) an empty thread reel
36. 36.⚙️ Which of these is an inclined plane? (a) a crane (b) a sloping road (c) a spoon lifting a lid (d) a steering wheel
37. 37.⚙️ Which of these is a lever? (a) a flagpole (b) a tap handle (c) a bottle opener (d) a crane
38. 38.True or false: a see-saw is a lever. (a) False (b) True
39. 39.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
40. 40.⚖️ 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

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