Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 584 · 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.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) down (c) in a circle (d) up
2. 2.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
3. 3.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
4. 4.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a well pulley (c) a doorknob (d) a slide
5. 5.True or false: a well pulley is a wheel and axle. (a) True (b) False
6. 6.⚖️ 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
7. 7.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) on the flagpole (c) on the blackboard (d) in the tap
8. 8.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) changes pull direction (c) adds weight (d) makes it magnetic
9. 9.⚖️ 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) the same string (c) number of pulleys
10. 10.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a battery cell (c) turmeric powder (d) string
11. 11.🛟 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
12. 12.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
13. 13.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) a balloon (d) a small paper cup
14. 14.True or false: a bottle opener is a lever. (a) False (b) True
15. 15.⚖️ 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 string (d) the lifting height
16. 16.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) rope (c) magnet (d) battery
17. 17.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
18. 18.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a balloon (c) an empty thread reel (d) coins as the load
19. 19.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 40 cm (c) 20 cm (d) 5 cm
20. 20.⚖️ 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) False (b) True
21. 21.True or false: turmeric powder is not needed for the thread-reel pulley. (a) False (b) True
22. 22.⚖️ 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
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) an empty thread reel (c) a small paper cup (d) string
24. 24.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a see-saw (c) a flagpole (d) a crowbar
25. 25.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a magnet (c) an empty thread reel (d) a small paper cup
26. 26.⚙️ Which simple machine is a slide? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
27. 27.True or false: a see-saw is a lever. (a) False (b) True
28. 28.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) harder (c) impossible (d) the same
29. 29.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) yeast (c) coins as the load (d) turmeric powder
30. 30.⚙️ Which simple machine is a flagpole? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
31. 31.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
32. 32.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) water gets lighter (c) the bucket floats (d) pulling down is easier
33. 33.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
34. 34.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
35. 35.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) a battery cell (d) a small paper cup
36. 36.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
37. 37.🛟 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
38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) a mirror (d) coins as the load
39. 39.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) about half (c) the same (d) zero
40. 40.⚙️ Which of these is a lever? (a) a sloping road (b) a see-saw (c) a doorknob (d) a well pulley

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