Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 598 · 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 “number of pulleys”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a small paper cup (c) an empty thread reel (d) a balloon
3. 3.⚙️ Which of these is a lever? (a) a sloping road (b) a well pulley (c) a tap handle (d) a see-saw
4. 4.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 20 cm (c) 10 cm (d) 40 cm
5. 5.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) up (c) down (d) sideways
6. 6.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) impossible (c) the same (d) harder
7. 7.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
8. 8.🧺 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 mirror (d) coins as the load
9. 9.True or false: a crane is a lever. (a) False (b) True
10. 10.⚖️ 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) how hard we must pull (c) the same string
11. 11.True or false: a bottle opener is a wheel and axle. (a) True (b) False
12. 12.⚙️ Which of these is a wheel and axle? (a) a well pulley (b) a crane (c) a flagpole (d) a doorknob
13. 13.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
14. 14.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
15. 15.⚖️ 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
16. 16.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) on the flagpole (c) on the blackboard (d) in the tap
17. 17.⚖️ 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
18. 18.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
19. 19.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) pulling down is easier (c) the bucket floats (d) the rope gets shorter
20. 20.⚖️ 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 cup of coins (b) how hard we must pull (c) number of pulleys (d) the same string
21. 21.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) rope (c) battery (d) magnet
22. 22.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
23. 23.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) yeast (d) string
24. 24.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
25. 25.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) yeast (c) a pencil (d) an empty thread reel
26. 26.⚙️ Which of these is a lever? (a) a ramp (b) a flagpole (c) a crowbar (d) a crane
27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) True (b) False
28. 28.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a well pulley (c) a spoon lifting a lid (d) a steering wheel
29. 29.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) coins as the load (d) a magnet
31. 31.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
32. 32.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) yeast (c) turmeric powder (d) a small paper cup
33. 33.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
34. 34.⚖️ 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
35. 35.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
36. 36.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
37. 37.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
38. 38.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it is magnetic (c) it might sing (d) it could fall on you
39. 39.⚖️ 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 cup of coins (c) the same string (d) how hard we must pull
40. 40.⚖️ 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 change it (c) we keep it the same

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