Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 79 · 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.⚙️ Which of these is an inclined plane? (a) a slide (b) a bottle opener (c) a steering wheel (d) a well pulley
2. 2.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) pulling down is easier (c) the rope gets shorter (d) the bucket floats
3. 3.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
4. 4.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) turmeric powder (d) an empty thread reel
5. 5.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
6. 6.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) number of pulleys (b) how hard we must pull (c) the same cup of coins (d) the same string
7. 7.⚖️ 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 keep it the same (c) we change it
8. 8.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) coins as the load (c) a mirror (d) a balloon
9. 9.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
10. 10.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a balloon (c) a small paper cup (d) a pencil
11. 11.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
12. 12.⚖️ 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
13. 13.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 10 cm (c) 20 cm (d) 40 cm
14. 14.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
15. 15.True or false: a steering wheel is an inclined plane. (a) True (b) False
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) coins as the load (d) a balloon
17. 17.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
18. 18.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets wet (c) it turns blue (d) it gets longer
19. 19.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the bench (c) on the flagpole (d) on the blackboard
20. 20.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) a pencil (d) a magnet
21. 21.⚙️ Which of these is a lever? (a) a bottle opener (b) a doorknob (c) a tap handle (d) a steering wheel
22. 22.⚙️ Which simple machine is a bottle opener? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
23. 23.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) easier (d) impossible
24. 24.⚙️ Which simple machine is a crane? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
25. 25.⚙️ Which simple machine is a slide? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
26. 26.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) battery (c) magnet (d) rope
27. 27.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) turmeric powder (c) a pencil (d) yeast
28. 28.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it gets hot (c) it is magnetic (d) it could fall on you
29. 29.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
30. 30.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a flagpole (c) a crane (d) a sloping road
31. 31.⚙️ Which of these is a lever? (a) a sloping road (b) a see-saw (c) a slide (d) a doorknob
32. 32.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) string (c) an empty thread reel (d) a battery cell
33. 33.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) a pencil (c) an empty thread reel (d) a small paper cup
34. 34.True or false: a doorknob is a wheel and axle. (a) True (b) False
35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) False (b) True
36. 36.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
37. 37.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
38. 38.⚖️ 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 cup of coins
39. 39.⚙️ Which of these uses a pulley? (a) a tap handle (b) a crane (c) a steering wheel (d) a see-saw
40. 40.True or false: a slide is an inclined plane. (a) True (b) False

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