Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 283 · 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? True or false: how hard we must pull is what we measure. (a) True (b) False
2. 2.True or false: a crowbar is a wheel and axle. (a) True (b) False
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) a balloon (d) string
4. 4.⚖️ 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 cup of coins (b) how hard we must pull (c) number of pulleys (d) the lifting height
5. 5.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
6. 6.⚙️ Which of these is a lever? (a) a flagpole (b) a tap handle (c) a well pulley (d) a crowbar
7. 7.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) the same (c) zero (d) double
8. 8.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
9. 9.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) halves the weight (c) adds weight (d) makes it magnetic
10. 10.⚙️ Which simple machine is a doorknob? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
11. 11.True or false: a see-saw is a lever. (a) False (b) True
12. 12.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same cup of coins (b) number of pulleys (c) how hard we must pull
13. 13.⚙️ Which simple machine is a well pulley? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
14. 14.⚙️ Which simple machine is a crane? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
15. 15.🛟 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
16. 16.⚙️ Which of these is a wheel and axle? (a) a sloping road (b) a bottle opener (c) a crane (d) a doorknob
17. 17.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a sloping road (c) a spoon lifting a lid (d) a well pulley
18. 18.⚖️ 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) how hard we must pull (c) the lifting height (d) number of pulleys
19. 19.🧺 Which of these is needed for the thread-reel pulley? (a) string (b) turmeric powder (c) a magnet (d) a battery cell
20. 20.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a battery cell (c) a pencil (d) turmeric powder
21. 21.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) coins as the load (c) a balloon (d) an empty thread reel
22. 22.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) a magnet (d) coins as the load
24. 24.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) on the blackboard (c) in the tap (d) on the flagpole
25. 25.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False
26. 26.🛟 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
27. 27.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
28. 28.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) water gets lighter (c) the rope gets shorter (d) pulling down is easier
29. 29.⚙️ Which of these is a lever? (a) a ramp (b) a bottle opener (c) a tap handle (d) a flagpole
30. 30.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
31. 31.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) yeast (c) a magnet (d) coins as the load
32. 32.⚖️ 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
33. 33.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
34. 34.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) turmeric powder (c) a pencil (d) an empty thread reel
35. 35.True or false: a bottle opener uses a pulley. (a) True (b) False
36. 36.True or false: a slide is an inclined plane. (a) True (b) False
37. 37.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a steering wheel (c) a see-saw (d) a ramp
38. 38.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
39. 39.⚖️ 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
40. 40.⚖️ 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) True (b) False

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