Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 239 · 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 a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 40 cm (c) 5 cm (d) 20 cm
2. 2.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) turmeric powder (c) string (d) a pencil
4. 4.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a pencil (c) string (d) a balloon
5. 5.⚖️ 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) the lifting height (c) how hard we must pull
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) string (c) coins as the load (d) an empty thread reel
7. 7.⚙️ Which simple machine is a spoon lifting a lid? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
8. 8.⚖️ 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
9. 9.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
10. 10.⚙️ Which simple machine is a slide? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
11. 11.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
12. 12.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a crane (c) a sloping road (d) a slide
13. 13.🧺 Which of these is not needed for the thread-reel pulley? (a) a balloon (b) an empty thread reel (c) a small paper cup (d) string
14. 14.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) in the tap (c) on the bench (d) on the flagpole
15. 15.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
16. 16.⚖️ 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 string (c) how hard we must pull (d) number of pulleys
17. 17.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets longer (c) it can hurt your finger (d) it gets wet
18. 18.True or false: a slide uses a pulley. (a) True (b) False
19. 19.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) magnet (c) rope (d) nail
20. 20.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
21. 21.🧺 Which of these is not needed for the thread-reel pulley? (a) a mirror (b) a small paper cup (c) a pencil (d) an empty thread reel
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we change it (c) we keep it the same
23. 23.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a ramp (c) a see-saw (d) a doorknob
24. 24.⚙️ Which of these uses a pulley? (a) a ramp (b) a sloping road (c) a see-saw (d) a well pulley
25. 25.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
26. 26.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
27. 27.🧺 Which of these is not needed for the thread-reel pulley? (a) yeast (b) a small paper cup (c) string (d) an empty thread reel
28. 28.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
29. 29.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it is magnetic (c) it gets hot (d) it could fall on you
30. 30.True or false: a slide is an inclined plane. (a) False (b) True
31. 31.⚖️ 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
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.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a balloon (c) turmeric powder (d) string
34. 34.True or false: a tap handle is a wheel and axle. (a) False (b) True
35. 35.⚙️ Which simple machine is a crowbar? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
36. 36.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) True (b) False
37. 37.⚖️ 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 string
38. 38.⚙️ Which of these is a lever? (a) a tap handle (b) a ramp (c) a crane (d) a crowbar
39. 39.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) a magnet (d) a small paper cup
40. 40.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True

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