Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 428 · 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 simple machine is a crane? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
2. 2.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
3. 3.True or false: a ramp uses a pulley. (a) False (b) True
4. 4.⚖️ 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) how hard we must pull (c) the same cup of coins (d) number of pulleys
5. 5.⚖️ 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
6. 6.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
7. 7.⚙️ Which simple machine is a sloping road? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
8. 8.🏗️ Why is a pulley used to lift water from a deep well? (a) pulling down is easier (b) the bucket floats (c) water gets lighter (d) the rope gets shorter
9. 9.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) zero (c) the same (d) about half
10. 10.⚖️ 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
11. 11.⚙️ Which of these is a wheel and axle? (a) a crane (b) a doorknob (c) a crowbar (d) a bottle opener
12. 12.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we keep it the same (c) we measure it
14. 14.⚙️ Which of these is a lever? (a) a crowbar (b) a well pulley (c) a flagpole (d) a tap handle
15. 15.🧺 Which of these is not needed for the thread-reel pulley? (a) yeast (b) an empty thread reel (c) a small paper cup (d) coins as the load
16. 16.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) False (b) True
17. 17.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
18. 18.True or false: coins as the load is not needed for the thread-reel pulley. (a) True (b) False
19. 19.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
20. 20.⚖️ 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) how hard we must pull (d) the lifting height
21. 21.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) string (c) turmeric powder (d) a pencil
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we measure it (b) we change it (c) we keep it the same
23. 23.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a balloon (c) a small paper cup (d) a mirror
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) yeast (c) turmeric powder (d) a pencil
25. 25.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) turmeric powder (c) an empty thread reel (d) string
26. 26.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a mirror (c) an empty thread reel (d) a pencil
27. 27.⚖️ 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
28. 28.True or false: a crowbar is a lever. (a) False (b) True
29. 29.True or false: a flagpole is an inclined plane. (a) True (b) False
30. 30.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 5 cm (c) 40 cm (d) 10 cm
31. 31.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a mirror (c) coins as the load (d) yeast
32. 32.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the bench (c) on the blackboard (d) in the tap
33. 33.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) an empty thread reel (c) a balloon (d) a battery cell
34. 34.⚙️ Which simple machine is a ramp? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
35. 35.🧺 Do we need turmeric powder 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? True or false: how hard we must pull is what we measure. (a) True (b) False
37. 37.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
38. 38.⚙️ Which of these is a wheel and axle? (a) a slide (b) a steering wheel (c) a crowbar (d) a see-saw
39. 39.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
40. 40.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) up (c) sideways (d) down

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