Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 341 · 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.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
2. 2.⚙️ Which simple machine is a crane? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
3. 3.🧺 Do we need yeast 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? True or false: the same cup of coins is kept the same. (a) False (b) True
5. 5.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
6. 6.⚖️ 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 change it (b) we measure it (c) we keep it the same
7. 7.⚖️ 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 string (b) number of pulleys (c) how hard we must pull (d) the lifting height
8. 8.⚙️ Which of these uses a pulley? (a) a see-saw (b) a ramp (c) a doorknob (d) a crane
9. 9.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) on the flagpole (c) in the tap (d) on the blackboard
10. 10.⚙️ Which simple machine is a slide? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
11. 11.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) about half (c) the same (d) zero
12. 12.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) impossible (c) easier (d) harder
13. 13.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a mirror (c) string (d) a magnet
14. 14.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it could fall on you (c) it is magnetic (d) it gets hot
15. 15.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
16. 16.True or false: a sloping road is an inclined plane. (a) True (b) False
17. 17.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
18. 18.⚙️ Which simple machine is a flagpole? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) coins as the load (c) an empty thread reel (d) a battery cell
20. 20.🧺 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) string (d) a balloon
21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) coins as the load (d) a mirror
22. 22.⚖️ 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
23. 23.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
24. 24.⚖️ 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 measure it (b) we keep it the same (c) we change it
25. 25.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) sideways (c) down (d) in a circle
26. 26.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) a mirror (c) a balloon (d) a magnet
27. 27.⚖️ 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) the same string (c) the same cup of coins (d) how hard we must pull
28. 28.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) adds weight (c) halves the weight (d) makes it magnetic
29. 29.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets longer (c) it turns blue (d) it gets wet
30. 30.⚖️ 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
31. 31.⚙️ Which simple machine is a sloping road? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
32. 32.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a small paper cup (c) a battery cell (d) a balloon
33. 33.⚙️ Which of these is an inclined plane? (a) a spoon lifting a lid (b) a well pulley (c) a steering wheel (d) a slide
34. 34.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is kept the same. (a) True (b) False
35. 35.⚙️ Which simple machine is a well pulley? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
36. 36.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
37. 37.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
38. 38.True or false: a tap handle is a wheel and axle. (a) True (b) False
39. 39.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a small paper cup (c) an empty thread reel (d) turmeric powder
40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) yeast (d) coins as the load

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