Pulley STEM Project Worksheet

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

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