Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 359 · 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.🛟 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
2. 2.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) a pencil (c) a small paper cup (d) coins as the load
3. 3.⚖️ 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
4. 4.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a pencil (c) a mirror (d) yeast
5. 5.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a battery cell (c) a small paper cup (d) a pencil
6. 6.⚙️ Which of these is an inclined plane? (a) a slide (b) a flagpole (c) a well pulley (d) a see-saw
7. 7.⚙️ Which simple machine is a see-saw? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
8. 8.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) nail (c) magnet (d) rope
9. 9.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) double (c) zero (d) the same
10. 10.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) the same (c) harder (d) easier
11. 11.⚙️ Which of these is a wheel and axle? (a) a see-saw (b) a well pulley (c) a doorknob (d) a ramp
12. 12.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
13. 13.⚖️ 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) the lifting height (c) how hard we must pull
14. 14.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a small paper cup (c) a magnet (d) string
15. 15.True or false: a doorknob is a wheel and axle. (a) False (b) True
16. 16.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
17. 17.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a sloping road (c) a doorknob (d) a flagpole
18. 18.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
19. 19.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) coins as the load (c) yeast (d) a small paper cup
20. 20.⚖️ 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
21. 21.⚙️ Which of these uses a pulley? (a) a spoon lifting a lid (b) a sloping road (c) a crowbar (d) a well pulley
22. 22.⚖️ 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) False (b) True
23. 23.⚙️ Which simple machine is a spoon lifting a lid? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
24. 24.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) coins as the load (c) string (d) turmeric powder
25. 25.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) the rope gets shorter (c) pulling down is easier (d) water gets lighter
26. 26.True or false: a flagpole uses a pulley. (a) False (b) True
27. 27.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) string (d) a balloon
28. 28.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the blackboard (c) in the tap (d) on the bench
29. 29.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
30. 30.True or false: turmeric powder is not needed for the thread-reel pulley. (a) False (b) True
31. 31.True or false: a battery cell is needed for the thread-reel pulley. (a) False (b) True
32. 32.True or false: a steering wheel is an inclined plane. (a) False (b) True
33. 33.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a magnet (c) a mirror (d) a small paper cup
34. 34.⚙️ Which of these is an inclined plane? (a) a spoon lifting a lid (b) a sloping road (c) a flagpole (d) a bottle opener
35. 35.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
36. 36.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
38. 38.⚖️ 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
39. 39.⚖️ 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 lifting height (c) number of pulleys (d) the same string
40. 40.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it can hurt your finger (c) it turns blue (d) it gets wet

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