Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 826 · 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.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) coins as the load (c) a pencil (d) string
2. 2.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a small paper cup (c) a pencil (d) a magnet
4. 4.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) yeast (b) a pencil (c) an empty thread reel (d) a small paper cup
5. 5.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) False (b) True
6. 6.⚖️ 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
7. 7.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) a mirror (d) a small paper cup
8. 8.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
9. 9.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) down (c) sideways (d) up
10. 10.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
11. 11.🔮 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
12. 12.⚖️ 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 change it (c) we measure it
13. 13.⚙️ Which simple machine is a slide? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
14. 14.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a flagpole (c) a steering wheel (d) a slide
15. 15.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
16. 16.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
17. 17.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it turns blue (c) it gets longer (d) it can hurt your finger
18. 18.True or false: a sloping road is an inclined plane. (a) True (b) False
19. 19.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) in the tap (c) on the blackboard (d) on the bench
20. 20.⚙️ Which of these is a wheel and axle? (a) a well pulley (b) a slide (c) a doorknob (d) a crane
21. 21.⚖️ 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) how hard we must pull (c) the same string (d) the same cup of coins
22. 22.🧺 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
23. 23.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a battery cell (c) a balloon (d) a pencil
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a mirror (c) a magnet (d) an empty thread reel
25. 25.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
26. 26.⚖️ 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 same cup of coins
27. 27.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a slide (c) a flagpole (d) a bottle opener
28. 28.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) adds weight (c) makes it magnetic (d) halves the weight
29. 29.⚖️ 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) number of pulleys (c) how hard we must pull (d) the lifting height
30. 30.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
31. 31.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a balloon (c) an empty thread reel (d) coins as the load
32. 32.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) zero (c) about half (d) the same
33. 33.⚖️ 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 measure it (b) we change it (c) we keep it the same
34. 34.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a spoon lifting a lid (c) a see-saw (d) a crane
35. 35.True or false: a tap handle is an inclined plane. (a) False (b) True
36. 36.🧺 Which of these is needed for the thread-reel pulley? (a) a small paper cup (b) a balloon (c) a mirror (d) a magnet
37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) False (b) True
38. 38.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
39. 39.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “how hard we must pull”? (a) we keep it the same (b) we change it (c) we measure it
40. 40.⚙️ Which simple machine is a sloping road? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley

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