Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 725 · 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.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) battery (c) nail (d) rope
2. 2.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it turns blue (d) it can hurt your finger
3. 3.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it gets hot (c) it is magnetic (d) it might sing
4. 4.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) down (c) in a circle (d) sideways
5. 5.⚙️ Which simple machine is a steering wheel? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) yeast (c) a small paper cup (d) string
7. 7.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) yeast (c) string (d) turmeric powder
8. 8.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) False (b) True
9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) string (c) a balloon (d) coins as the load
10. 10.🏗️ 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
11. 11.⚙️ Which of these is an inclined plane? (a) a bottle opener (b) a well pulley (c) a sloping road (d) a crane
12. 12.True or false: a see-saw is a wheel and axle. (a) True (b) False
13. 13.⚖️ 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
14. 14.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
15. 15.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a small paper cup (c) a mirror (d) a pencil
16. 16.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
17. 17.⚙️ Which of these uses a pulley? (a) a sloping road (b) a see-saw (c) a slide (d) a well pulley
18. 18.⚖️ 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 keep it the same (c) we measure it
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) turmeric powder (c) a pencil (d) string
20. 20.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a mirror (c) a balloon (d) a pencil
21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) string (c) a magnet (d) a small paper cup
22. 22.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a slide (c) a crowbar (d) a well pulley
23. 23.True or false: a ramp is an inclined plane. (a) False (b) True
24. 24.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 5 cm (c) 40 cm (d) 20 cm
25. 25.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) string (d) a battery cell
26. 26.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.⚙️ Which of these is a lever? (a) a tap handle (b) a bottle opener (c) a slide (d) a ramp
28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) number of pulleys (b) the same string (c) the same cup of coins (d) the lifting height
29. 29.⚙️ Which simple machine is a crowbar? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
30. 30.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a mirror (c) yeast (d) coins as the load
31. 31.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
32. 32.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) an empty thread reel (d) yeast
33. 33.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
34. 34.⚖️ 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
35. 35.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) halves the weight (c) adds weight (d) makes it magnetic
36. 36.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) an empty thread reel (c) a small paper cup (d) a pencil
37. 37.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) impossible (c) easier (d) harder
38. 38.⚖️ 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
39. 39.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the bench (c) on the flagpole (d) in the tap
40. 40.True or false: a crane is an inclined plane. (a) False (b) True

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