Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 974 · 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 of these is not needed for the thread-reel pulley? (a) a small paper cup (b) an empty thread reel (c) coins as the load (d) turmeric powder
2. 2.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
3. 3.⚙️ Which of these is an inclined plane? (a) a spoon lifting a lid (b) a slide (c) a tap handle (d) a crowbar
4. 4.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets longer (c) it gets wet (d) it can hurt your finger
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) a pencil (c) string (d) an empty thread reel
6. 6.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) nail (c) battery (d) rope
7. 7.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) double (c) zero (d) about half
8. 8.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a magnet (c) an empty thread reel (d) a pencil
9. 9.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a well pulley (c) a doorknob (d) a sloping road
10. 10.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
11. 11.⚙️ Which simple machine is a tap handle? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
12. 12.⚖️ 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
13. 13.⚖️ 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
14. 14.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) on the blackboard (c) on the flagpole (d) in the tap
15. 15.🧺 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) a mirror (d) a pencil
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) a small paper cup (d) turmeric powder
17. 17.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 40 cm (c) 10 cm (d) 20 cm
18. 18.True or false: a bottle opener is a wheel and axle. (a) False (b) True
19. 19.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
20. 20.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.⚖️ 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
22. 22.⚙️ Which simple machine is a steering wheel? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
23. 23.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) yeast (d) coins as the load
25. 25.⚙️ Which simple machine is a slide? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
26. 26.True or false: a ramp is an inclined plane. (a) True (b) False
27. 27.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it is magnetic (c) it might sing (d) it gets hot
28. 28.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
29. 29.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
30. 30.True or false: turmeric powder 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) turmeric powder (b) a battery cell (c) a small paper cup (d) a magnet
32. 32.True or false: a spoon lifting a lid is a lever. (a) True (b) False
33. 33.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
34. 34.⚖️ 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 string
35. 35.⚙️ Which of these is an inclined plane? (a) a crane (b) a steering wheel (c) a ramp (d) a well pulley
36. 36.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
37. 37.⚖️ 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 measure it (c) we keep it the same
38. 38.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the lifting height (b) the same cup of coins (c) how hard we must pull (d) number of pulleys
39. 39.True or false: a crane is an inclined plane. (a) False (b) True
40. 40.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) turmeric powder (c) a balloon (d) coins as the load

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