Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 886 · 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 “the same string”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) down (c) up (d) sideways
3. 3.⚙️ Which simple machine is a crane? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
4. 4.⚙️ Which of these is a lever? (a) a steering wheel (b) a see-saw (c) a well pulley (d) a ramp
5. 5.⚖️ 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 keep it the same (c) we change it
6. 6.True or false: a spoon lifting a lid is an inclined plane. (a) True (b) False
7. 7.True or false: a doorknob is a wheel and axle. (a) True (b) False
8. 8.⚖️ 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) the same cup of coins (d) the lifting height
9. 9.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) about half (c) the same (d) zero
10. 10.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) impossible (d) easier
11. 11.⚙️ Which of these is a wheel and axle? (a) a bottle opener (b) a well pulley (c) a spoon lifting a lid (d) a tap handle
12. 12.⚙️ Which of these is a lever? (a) a well pulley (b) a ramp (c) a steering wheel (d) a spoon lifting a lid
13. 13.⚙️ Which simple machine is a flagpole? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
14. 14.⚙️ Which simple machine is a crowbar? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
15. 15.True or false: a tap handle is a wheel and axle. (a) True (b) False
16. 16.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) turmeric powder (c) a magnet (d) string
17. 17.⚖️ 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 same cup of coins (c) the lifting height (d) number of pulleys
18. 18.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) False (b) True
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) a small paper cup (c) string (d) an empty thread reel
20. 20.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it turns blue (d) it can hurt your finger
21. 21.⚙️ Which of these uses a pulley? (a) a sloping road (b) a steering wheel (c) a slide (d) a crane
22. 22.True or false: a slide is a wheel and axle. (a) True (b) False
23. 23.⚙️ Which simple machine is a steering wheel? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
24. 24.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
25. 25.⚙️ Which of these is a lever? (a) a flagpole (b) a crane (c) a crowbar (d) a doorknob
26. 26.⚙️ Which of these uses a pulley? (a) a well pulley (b) a tap handle (c) a slide (d) a steering wheel
27. 27.⚙️ Which simple machine is a see-saw? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
28. 28.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a ramp (c) a steering wheel (d) a see-saw
29. 29.True or false: a battery cell is needed for the thread-reel pulley. (a) False (b) True
30. 30.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
31. 31.True or false: a steering wheel is an inclined plane. (a) True (b) False
32. 32.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a magnet (c) string (d) coins as the load
33. 33.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) a pencil (c) string (d) an empty thread reel
34. 34.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) an empty thread reel (d) a balloon
35. 35.🇮🇳 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
36. 36.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) coins as the load (c) a pencil (d) string
37. 37.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) rope (c) nail (d) battery
38. 38.True or false: a spoon lifting a lid is a lever. (a) False (b) True
39. 39.⚙️ Which simple machine is a slide? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
40. 40.🧺 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) turmeric powder (d) a pencil

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