Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 488 · 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.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it is magnetic (c) it gets hot (d) it might sing
2. 2.⚖️ 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
3. 3.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
4. 4.⚖️ 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
5. 5.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a mirror (c) a balloon (d) string
6. 6.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) makes it magnetic (c) changes pull direction (d) adds weight
7. 7.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) coins as the load (c) string (d) yeast
8. 8.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
9. 9.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
10. 10.🏗️ Why is a pulley used to lift water from a deep well? (a) pulling down is easier (b) the rope gets shorter (c) water gets lighter (d) the bucket floats
11. 11.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 5 cm (c) 20 cm (d) 40 cm
12. 12.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
13. 13.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
14. 14.⚖️ 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) False (b) True
15. 15.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) turmeric powder (d) a small paper cup
16. 16.True or false: string is needed for the thread-reel pulley. (a) False (b) True
17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) a pencil (c) an empty thread reel (d) string
18. 18.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a ramp (c) a spoon lifting a lid (d) a see-saw
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a pencil (c) string (d) a mirror
20. 20.🛟 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
21. 21.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we measure it (c) we change it
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same cup of coins (b) the lifting height (c) the same string (d) how hard we must pull
23. 23.⚙️ Which of these is a lever? (a) a slide (b) a flagpole (c) a spoon lifting a lid (d) a well pulley
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a magnet (c) a mirror (d) a small paper cup
25. 25.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) an empty thread reel (c) a battery cell (d) turmeric powder
26. 26.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
27. 27.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a sloping road (c) a crowbar (d) a steering wheel
28. 28.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) sideways (c) in a circle (d) down
29. 29.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
30. 30.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the flagpole (c) on the bench (d) in the tap
31. 31.True or false: a steering wheel is a wheel and axle. (a) False (b) True
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the same string (b) the lifting height (c) number of pulleys (d) how hard we must pull
33. 33.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a battery cell (c) a pencil (d) string
34. 34.⚖️ 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 keep it the same (c) we measure it
35. 35.⚙️ Which of these uses a pulley? (a) a crowbar (b) a slide (c) a flagpole (d) a spoon lifting a lid
36. 36.True or false: a spoon lifting a lid is a wheel and axle. (a) False (b) True
37. 37.⚖️ 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 same cup of coins (c) how hard we must pull
38. 38.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
39. 39.⚖️ 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
40. 40.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed

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