Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 578 · 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 sloping road? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
2. 2.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
3. 3.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) changes pull direction (c) halves the weight (d) makes it magnetic
4. 4.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a magnet (c) an empty thread reel (d) a pencil
5. 5.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.True or false: a crowbar is an inclined plane. (a) False (b) True
7. 7.⚖️ 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
8. 8.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a small paper cup (c) a pencil (d) a magnet
9. 9.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) the bucket floats (c) water gets lighter (d) pulling down is easier
10. 10.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) the same (c) double (d) about half
11. 11.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) battery (c) rope (d) magnet
12. 12.True or false: string is needed for the thread-reel pulley. (a) True (b) False
13. 13.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
14. 14.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) an empty thread reel (c) a pencil (d) turmeric powder
15. 15.🛟 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
16. 16.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a pencil (c) yeast (d) turmeric powder
17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) yeast (c) coins as the load (d) a pencil
18. 18.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a see-saw (c) a tap handle (d) a ramp
19. 19.⚖️ 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
20. 20.🧺 Which of these is not needed for the thread-reel pulley? (a) yeast (b) a small paper cup (c) an empty thread reel (d) string
21. 21.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
22. 22.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) turmeric powder (c) an empty thread reel (d) yeast
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) an empty thread reel (d) a balloon
24. 24.⚙️ Which simple machine is a see-saw? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
25. 25.⚙️ Which of these is a lever? (a) a doorknob (b) a sloping road (c) a flagpole (d) a spoon lifting a lid
26. 26.⚖️ 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
27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is what we measure. (a) True (b) False
28. 28.True or false: a steering wheel is a lever. (a) True (b) False
29. 29.⚖️ 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
30. 30.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
31. 31.🧺 Which of these is needed for the thread-reel pulley? (a) a small paper cup (b) turmeric powder (c) a mirror (d) a balloon
32. 32.⚖️ 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 measure it (b) we change it (c) we keep it the same
33. 33.True or false: a see-saw uses a pulley. (a) False (b) True
34. 34.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
35. 35.True or false: a steering wheel is a wheel and axle. (a) False (b) True
36. 36.⚙️ Which of these is an inclined plane? (a) a spoon lifting a lid (b) a crowbar (c) a sloping road (d) a steering wheel
37. 37.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
38. 38.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a battery cell (c) coins as the load (d) a magnet
39. 39.⚖️ 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 change it (c) we keep it the same
40. 40.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it can hurt your finger (d) it turns blue

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