Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 335 · 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 needed for the thread-reel pulley? (a) a mirror (b) a battery cell (c) yeast (d) a small paper cup
2. 2.⚙️ Which of these is a wheel and axle? (a) a bottle opener (b) a sloping road (c) a crane (d) a doorknob
3. 3.True or false: coins as the load is needed for the thread-reel pulley. (a) True (b) False
4. 4.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a magnet (c) a small paper cup (d) string
5. 5.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
6. 6.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 40 cm (c) 20 cm (d) 5 cm
7. 7.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
8. 8.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
9. 9.True or false: a steering wheel uses a pulley. (a) False (b) True
10. 10.⚙️ Which of these uses a pulley? (a) a slide (b) a well pulley (c) a spoon lifting a lid (d) a tap handle
11. 11.🧺 Which of these is not needed for the thread-reel pulley? (a) yeast (b) a pencil (c) an empty thread reel (d) coins as the load
12. 12.🛟 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
13. 13.⚖️ 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
14. 14.⚖️ 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) how hard we must pull (c) the lifting height
15. 15.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
16. 16.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the lifting height (b) the same cup of coins (c) the same string (d) how hard we must pull
17. 17.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it can hurt your finger (c) it turns blue (d) it gets longer
18. 18.⚖️ 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) True (b) False
19. 19.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) turmeric powder (c) yeast (d) a pencil
20. 20.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
21. 21.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
22. 22.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
23. 23.⚙️ Which simple machine is a tap handle? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
24. 24.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
25. 25.True or false: yeast is needed for the thread-reel pulley. (a) False (b) True
26. 26.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) the same (c) easier (d) harder
27. 27.⚙️ Which of these is a lever? (a) a spoon lifting a lid (b) a flagpole (c) a crane (d) a well pulley
28. 28.⚖️ 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 change it (c) we keep it the same
29. 29.🧺 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) coins as the load (d) yeast
30. 30.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
31. 31.True or false: a slide is an inclined plane. (a) True (b) False
32. 32.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) magnet (c) nail (d) battery
33. 33.⚖️ 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 measure it (c) we keep it the same
34. 34.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
35. 35.True or false: a see-saw is an inclined plane. (a) True (b) False
36. 36.True or false: turmeric powder is not needed for the thread-reel pulley. (a) False (b) True
37. 37.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) pulling down is easier (c) the bucket floats (d) the rope gets shorter
38. 38.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) in the tap (c) on the bench (d) on the blackboard
39. 39.⚖️ 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
40. 40.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever

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