Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 885 · 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 simple machine is a spoon lifting a lid? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
2. 2.True or false: yeast is not needed for the thread-reel pulley. (a) False (b) True
3. 3.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
4. 4.⚖️ 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 keep it the same (c) we change it
5. 5.⚙️ Which simple machine is a steering wheel? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
6. 6.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a spoon lifting a lid (c) a slide (d) a tap handle
7. 7.🛟 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
8. 8.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) yeast (c) a small paper cup (d) coins as the load
9. 9.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a well pulley (c) a sloping road (d) a doorknob
10. 10.⚖️ 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
11. 11.⚖️ 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 change it (b) we keep it the same (c) we measure it
12. 12.True or false: a slide is an inclined plane. (a) False (b) True
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) how hard we must pull (b) the same cup of coins (c) number of pulleys (d) the lifting height
14. 14.🇮🇳 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
15. 15.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) zero (c) the same (d) about half
16. 16.True or false: a doorknob is a wheel and axle. (a) False (b) True
17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) turmeric powder (d) a pencil
18. 18.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) string (c) a mirror (d) turmeric powder
19. 19.True or false: string is needed for the thread-reel pulley. (a) True (b) False
20. 20.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it is magnetic (c) it gets hot (d) it might sing
21. 21.True or false: a tap handle is an inclined plane. (a) False (b) True
22. 22.⚙️ Which simple machine is a ramp? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
23. 23.True or false: a battery cell is not needed for the thread-reel pulley. (a) False (b) True
24. 24.⚙️ Which of these is a wheel and axle? (a) a sloping road (b) a steering wheel (c) a bottle opener (d) a see-saw
25. 25.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) sideways (c) up (d) down
26. 26.⚖️ 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
27. 27.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a see-saw (c) a well pulley (d) a ramp
28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is the one thing we change. (a) False (b) True
29. 29.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) adds weight (c) makes it magnetic (d) changes pull direction
30. 30.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a pencil (c) a mirror (d) coins as the load
32. 32.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
33. 33.⚖️ 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) False (b) True
34. 34.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
35. 35.⚖️ 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) number of pulleys (d) the same cup of coins
36. 36.⚙️ Which of these is a lever? (a) a ramp (b) a doorknob (c) a slide (d) a bottle opener
37. 37.True or false: a see-saw is a lever. (a) False (b) True
38. 38.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) False (b) True
39. 39.⚖️ 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
40. 40.⚙️ Which of these is a lever? (a) a steering wheel (b) a see-saw (c) a well pulley (d) a doorknob

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