Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 468 · 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.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.True or false: a flagpole is an inclined plane. (a) False (b) True
3. 3.🔮 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
4. 4.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) an empty thread reel (d) a mirror
5. 5.True or false: a well pulley uses a pulley. (a) True (b) False
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) yeast (c) a small paper cup (d) an empty thread reel
7. 7.True or false: a sloping road is a lever. (a) False (b) True
8. 8.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) the rope gets shorter (c) pulling down is easier (d) water gets lighter
9. 9.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it could fall on you (c) it gets hot (d) it is magnetic
10. 10.True or false: a tap handle is a wheel and axle. (a) True (b) False
11. 11.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
12. 12.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
13. 13.True or false: a ramp is a lever. (a) True (b) False
14. 14.⚙️ Which of these uses a pulley? (a) a flagpole (b) a bottle opener (c) a sloping road (d) a tap handle
15. 15.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a balloon (c) an empty thread reel (d) a pencil
16. 16.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) coins as the load (d) a small paper cup
18. 18.⚖️ 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
19. 19.⚖️ 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
20. 20.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a magnet (c) a pencil (d) string
21. 21.True or false: a bottle opener is an inclined plane. (a) True (b) False
22. 22.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
23. 23.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
24. 24.⚙️ Which of these is a lever? (a) a bottle opener (b) a slide (c) a tap handle (d) a crane
25. 25.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
26. 26.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a mirror (c) a small paper cup (d) a magnet
27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is the one thing we change. (a) False (b) True
28. 28.⚙️ Which simple machine is a spoon lifting a lid? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
29. 29.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a flagpole (c) a crane (d) a slide
30. 30.⚖️ 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 keep it the same (b) we measure it (c) we change it
31. 31.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
32. 32.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a pencil (c) an empty thread reel (d) a magnet
33. 33.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets wet (c) it gets longer (d) it turns blue
34. 34.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is the one thing we change. (a) False (b) True
35. 35.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) rope (c) battery (d) nail
36. 36.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
37. 37.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the bench (c) in the tap (d) on the flagpole
38. 38.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
39. 39.⚖️ 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
40. 40.⚖️ 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 lifting height (c) number of pulleys

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