Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 729 · 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 change it (b) we keep it the same (c) we measure it
2. 2.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) in the tap (c) on the blackboard (d) on the flagpole
3. 3.True or false: a doorknob is an inclined plane. (a) False (b) True
4. 4.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) a mirror (d) string
5. 5.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) the same (c) about half (d) double
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 string (d) the same cup of coins
7. 7.⚖️ 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 change it (c) we measure it
8. 8.⚙️ Which simple machine is a doorknob? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
9. 9.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it turns blue (c) it gets wet (d) it can hurt your finger
10. 10.⚙️ Which of these is an inclined plane? (a) a bottle opener (b) a sloping road (c) a tap handle (d) a crowbar
11. 11.🧺 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) a small paper cup
12. 12.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a balloon (c) a magnet (d) a small paper cup
13. 13.True or false: a see-saw is a lever. (a) False (b) True
14. 14.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) a battery cell (c) a balloon (d) yeast
15. 15.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the lifting height (b) how hard we must pull (c) the same string (d) number of pulleys
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) a small paper cup (c) string (d) coins as the load
17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) a small paper cup (d) a battery cell
18. 18.⚙️ Which of these is a wheel and axle? (a) a sloping road (b) a steering wheel (c) a well pulley (d) a bottle opener
19. 19.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
20. 20.⚙️ Which of these uses a pulley? (a) a tap handle (b) a see-saw (c) a well pulley (d) a spoon lifting a lid
21. 21.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a small paper cup (c) a battery cell (d) coins as the load
22. 22.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a tap handle (c) a flagpole (d) a see-saw
23. 23.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) down (b) up (c) in a circle (d) sideways
24. 24.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we keep it the same (b) we change it (c) we measure it
25. 25.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
26. 26.⚙️ Which simple machine is a flagpole? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) True (b) False
28. 28.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) string (c) a mirror (d) turmeric powder
29. 29.⚙️ Which simple machine is a ramp? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) a balloon (d) coins as the load
31. 31.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
32. 32.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
33. 33.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it might sing (c) it could fall on you (d) it gets hot
34. 34.⚖️ 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) False (b) True
35. 35.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
36. 36.True or false: coins as the load is needed for the thread-reel pulley. (a) True (b) False
37. 37.True or false: a spoon lifting a lid is a lever. (a) False (b) True
38. 38.⚙️ Which of these uses a pulley? (a) a sloping road (b) a see-saw (c) a crane (d) a doorknob
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 measure it (b) we change it (c) we keep it the same
40. 40.⚙️ Which simple machine is a well pulley? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever

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